main: Split up ObexPush and DAV into 2 binaries

https://bugzilla.gnome.org/show_bug.cgi?id=731860
data: Update startup file description

https://bugzilla.gnome.org/show_bug.cgi?id=731860
data: Get started by the g-s-d sharing plugin

Remove the AutostartCondition so that we're started by the
gnome-settings-daemon sharing plugin, not by gnome-session directly.

https://bugzilla.gnome.org/show_bug.cgi?id=731860
build: Bump version to 3.13.1