approve sub request changes the shift to the other user; closes #910
non-admins no longer have link to schedule builder; closes #913
refactored
Merge pull request #911 from affektive/sub_requests

approve sub request changes the shift to the other user; closes #910
mobile links
Merge branch 'master' of github.com:duffcodester/digiquatics
Merge branch 'master' of github.com:duffcodester/digiquatics into mobile_views

Conflicts:
	app/views/layouts/partials/_mobile_links.html.erb