Various fixes

(1) font_awesome changed to font-awesome on register/enqueue.  (2) class
boardheader added to $boardheader output.  (3) blank "default" state
added to activity loop  (4) closing div tag removed from _loop.  (5) div
id stats changed to class stats to avoid duplicate error in validation
on _stats  (6) Vimeo width 100% set to 500 to work better with scripts
like fitvid.  (7) divs removed from post_action  (8) Submit to
($thisboard) added to post form for easier recognition of where content
is being submitted to.  (9) Profile loop query moved to _profile_loop.
(10) some minor CSS changes.