NewPodcast: Prefer the rss.description attribute.

Since we can handle rendering html stuff by converting it to pango
we no longer need the text-only itunes summary attribure.

hammond-gtk/resources/gtk/show_widget.ui

@@ -112,12 +112,10 @@ Tobias Bernard
                                 <property name="halign">start</property>
                                 <property name="valign">end</property>
                                 <property name="label">foo</property>
+                                <property name="use_markup">True</property>
                                 <property name="wrap">True</property>
                                 <property name="wrap_mode">word-char</property>
                                 <property name="max_width_chars">90</property>
-                                <attributes>
-                                  <attribute name="weight" value="medium"/>
-                                </attributes>
                               </object>
                               <packing>
                                 <property name="expand">False</property>

hammond-gtk/src/widgets/show.rs

@@ -123,7 +123,7 @@ impl ShowWidget {
         // markup.
         // let desc = dissolve::strip_html_tags(text).join(" ");
         // self.description.set_text(&replace_extra_spaces(&desc));
-        self.description.set_text(&html_to_pango_markup(text));
+        self.description.set_markup(&html_to_pango_markup(text));
     }
 
     /// Set scrolled window vertical adjustment.