dateMenu: Bottom-align weather title/location

The two labels use different font sizes, so they don't align properly.
Unfortunately we don't have BASELINE alignment in Clutter, but at least
END comes closer than the default FILL.

https://gitlab.gnome.org/GNOME/gnome-shell/issues/1927

js/ui/dateMenu.js

@@ -272,6 +272,7 @@ class WeatherSection extends St.Button {
             style_class: 'weather-header',
             x_align: Clutter.ActorAlign.START,
             x_expand: true,
+            y_align: Clutter.ActorAlign.END,
             text: _('Weather'),
         }));
         box.add_child(titleBox);
@@ -279,6 +280,7 @@ class WeatherSection extends St.Button {
         this._titleLocation = new St.Label({
             style_class: 'weather-header location',
             x_align: Clutter.ActorAlign.END,
+            y_align: Clutter.ActorAlign.END,
         });
         titleBox.add_child(this._titleLocation);