Moves document header into a partial. Fixes #519.
Removes addthis/toolbox because it is not being used anymore
Merge branch 'development' of github.com:afred/openvault into document-header-partial

Conflicts:
	app/views/programs/show.html.erb
	app/views/videos/show.html.erb
Merge pull request #520 from afred/document-header-partial

Moves document header into a partial. Fixes #519.