fix #729
Always shows "join" options but only a user with a role of administrator have the recording options.
fix #729
Corrected method to check if current user is a super user (before I was calling a method from spaces which caused an error).
Merge remote-tracking branch 'origin/bug729' into recordings

Conflicts:
	app/views/recordings/_recording_start_links.html.erb
Spaces webconf sidebar should show the popup to join the conference, refs #729
Fix SpacesController to accept changes in it's webconf room