Add GPL notices to the glade ui files.

hammond-gtk/resources/gtk/empty_view.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.1 -->
+<!-- Generated with glade 3.21.0 
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
 <interface>
   <requires lib="gtk+" version="3.20"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkBox" id="empty_view">
     <property name="visible">True</property>
     <property name="can_focus">False</property>

hammond-gtk/resources/gtk/episode_widget.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.2 -->
+<!-- Generated with glade 3.21.0 
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
 <interface>
   <requires lib="gtk+" version="3.20"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkBox" id="episode_container">
     <property name="visible">True</property>
     <property name="can_focus">False</property>

hammond-gtk/resources/gtk/episodes_view.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.2 -->
+<!-- Generated with glade 3.21.0 
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
 <interface>
   <requires lib="gtk+" version="3.20"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkBox" id="container">
     <property name="name">container</property>
     <property name="visible">True</property>

hammond-gtk/resources/gtk/episodes_view_widget.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.2 -->
+<!-- Generated with glade 3.21.0 
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
 <interface>
   <requires lib="gtk+" version="3.20"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkBox" id="container">
     <property name="visible">True</property>
     <property name="can_focus">False</property>

hammond-gtk/resources/gtk/headerbar.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.2 -->
+<!-- Generated with glade 3.21.0 
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
 <interface>
   <requires lib="gtk+" version="3.20"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkPopover" id="add_popover">
     <property name="can_focus">False</property>
     <property name="tooltip_text" translatable="yes">Add a new feed</property>

hammond-gtk/resources/gtk/show_widget.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.2 -->
+<!-- Generated with glade 3.21.0 
-<interface domain="gnome-music">
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
+<interface domain="">
   <requires lib="gtk+" version="3.12"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkBox" id="container">
     <property name="visible">True</property>
     <property name="can_focus">False</property>

hammond-gtk/resources/gtk/shows_child.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.2 -->
+<!-- Generated with glade 3.21.0 
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
 <interface>
   <requires lib="gtk+" version="3.20"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkBox" id="fb_child">
     <property name="width_request">256</property>
     <property name="height_request">256</property>

hammond-gtk/resources/gtk/shows_view.ui

@@ -1,7 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.2 -->
+<!-- Generated with glade 3.21.0 
+
+Copyright (C) 2017 - 2018
+
+This file is part of Hammond.
+
+Hammond is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Hammond is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Hammond.  If not, see <http://www.gnu.org/licenses/>.
+
+Authors:
+Jordan Petridis
+Tobias Bernard
+
+-->
 <interface>
   <requires lib="gtk+" version="3.20"/>
+  <!-- interface-license-type gplv3 -->
+  <!-- interface-name Hammond -->
+  <!-- interface-description A podcast client for the GNOME Desktop -->
+  <!-- interface-copyright 2017 - 2018 -->
+  <!-- interface-authors Jordan Petridis\nTobias Bernard -->
   <object class="GtkBox" id="fb_parent">
     <property name="name">fb_parent</property>
     <property name="visible">True</property>