Make markers selectable by touch. Also make touch events
(panning) on the background map view de-select them to
be consistence with the normal behaviour with mouse-based
events.

Closes #11

The _storeId source needs to be set before
creating the map view to avoid a "property undefined"
error when running with --local.

Piotr Drąg authored Mar 23, 2018 and Marcus Lundblad committed Mar 25, 2018

It seems that gettext doesn’t like …
in there and refuses to show the translation.

https://bugzilla.gnome.org/show_bug.cgi?id=794638

All other files in Maps are licensed as GPL 2+, marking this
as 3+ was a mistake, and since I'm the only contributer to
these files, I should be able to safely change them (and
they could still be optionally considered 3+ by some
potential third-party derivative work).

Don't transfer ownership of list returned by
maps_contact_store_get_contacts(), as the contact
store instance frees it when getting disposed.

https://bugzilla.gnome.org/show_bug.cgi?id=794002