added item view to admin tabs
got itemview working (need to make selectboxes, buttons and verification yet
item rows work now
edited tabviews,  still have to fix item views events
cleaned admin area a bit, and still cant fix itemview events
finally fixed bug with itemview events
moved all item-specific handlers to ItemView
Merge branch 'master' of https://github.com/SoftServeUniversity/WEBUI-092