fix issue with wall update
update post scroller after first post image is loaded
show tracks count on post actionbar
fix rendering of currently played track
handle shortcut key events in group view: bind after group view is activated and unbind if they is deactivated
fix issue with rendering first post in wall (at the moment when first post is rendering wall el is not always appended to DOM)
fix post audio qorder missing when user returns to this post
bump version
Merge branch 'release/v0.2.5' into dev
fix position of queue and tracklist wrapper el; show dragging area in queue list