utils: Add activateAction function

https://bugzilla.gnome.org/show_bug.cgi?id=728117
Add ShareDialog

Add the ShareDialog module, which includes sharing a place to
GNOME Weather and GNOME Clocks.

https://bugzilla.gnome.org/show_bug.cgi?id=728117
MapBubble: Add share button

https://bugzilla.gnome.org/show_bug.cgi?id=728117
Add share button to userLocation and searchResult

https://bugzilla.gnome.org/show_bug.cgi?id=728117
ZoomControl: Refine label sizes

Increase the size of the labels inside the zoom-buttons to 1.2 and use
proper unicode MINUS for zoom-out-button.
Bubbles: Shorten Wikipedia link label
PlaceStore: Fix exists method
Sidebar: add toggle keybinding

Toggle the routing sidebar with Ctrl+D.
PlaceStore: Add getModelForPlaceType method

https://bugzilla.gnome.org/show_bug.cgi?id=722102
PlaceStore: Add removePlace method

https://bugzilla.gnome.org/show_bug.cgi?id=722102
Split out PlaceListRow from SearchPopup

https://bugzilla.gnome.org/show_bug.cgi?id=722102
Add FavoritesPopover

https://bugzilla.gnome.org/show_bug.cgi?id=722102
PlaceStore: Add addPlace method

https://bugzilla.gnome.org/show_bug.cgi?id=722102
MapBubble: Add favorite button

https://bugzilla.gnome.org/show_bug.cgi?id=722102
MainWindow: Add favorites toggle

https://bugzilla.gnome.org/show_bug.cgi?id=722102
SearchResultBubble: Add favorite button

https://bugzilla.gnome.org/show_bug.cgi?id=722102
ShareDialog: Use name from desktop file
FavoritesPopover: Fix filter reveal
FavoritesPopover: Fix filter function
Release 3.15.2