Change mweb_events routes to use better names
Refactor some bbb rails abilities
Refactor web invitations
Correct space users view title

Conflicts:
	app/views/users/index.html.haml
Create join requests activity with valid data + some tests refs #1395
Send email to introducer when invite is rejected. refs #1402
Merge remote-tracking branch 'origin/joinrequest-corrections' into 1310-admins-accepting-join-requests

Conflicts:
	app/controllers/join_requests_controller.rb
	spec/controllers/join_requests_controller_spec.rb
More tests for recent activities on declined join requests

refs #1402