Fix some unclear language regarding ATK_STATE_ACTIVE

https://bugzilla.gnome.org/show_bug.cgi?id=740044
Updated Swedish translation
Improve documentation related to AtkState and AtkStateSet

https://bugzilla.gnome.org/show_bug.cgi?id=740066
doc: extend atk_focus_tracker_notify deprecation documentation
Merge branch 'master' of git://git.gnome.org/atk