search-view: fixed double border at the end of the list

Also, fixes a small details that the results list is
always expanded.

data/theme/gtk-styles.css

@@ -97,6 +97,10 @@ GcalSearchView > GtkViewport {
   background-color: @theme_bg_color;
 }
 
+.search-list {
+  border-bottom: 0px;
+}
+
 .search-list > GtkListBoxRow {
   border-bottom: solid 1px @borders;
 }

data/ui/search-view.ui

@@ -23,8 +23,12 @@
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
                 <property name="hexpand">True</property>
-                <property name="vexpand">True</property>
+                <property name="vexpand">False</property>
+                <property name="valign">GTK_ALIGN_START</property>
                 <property name="label_xalign">0</property>
+                <style>
+                  <class name="search-list" />
+                </style>
                 <child>
                   <object class="GtkListBox" id="listbox">
                     <property name="visible">True</property>

src/gcal-search-view.c

@@ -401,7 +401,6 @@ gcal_search_view_constructed (GObject *object)
 
   /* listbox */
   gtk_list_box_set_sort_func (GTK_LIST_BOX (priv->listbox), (GtkListBoxSortFunc) sort_by_event, object, NULL);
-  gtk_style_context_add_class (gtk_widget_get_style_context (priv->listbox), "search-list");
 
   gcal_manager_set_search_subscriber (
       priv->manager,