Add persistent/cache switch to collections index page.
Move persistent/cache toggle into a partial.
Add persistent/cache toggle to collections#show page.
Fix s/about/~/ substitution on dashboard.
Remove unused tutorial_group and tutorial_links queries.
Add persistent/cache toggle to collections table on dashboard.
Untabify.
Add UUIDs in TR tags so automated tests can find them.
Merge branch 'master' into 1969-persistent-switch

Conflicts:
	services/api/app/controllers/application_controller.rb
Add tests for persistent/cache switch.
Increase contrast between active/inactive sides of toggle switch.
Merge branch 'master' into 1969-persistent-switch
Merge branch 'master' into 1969-persistent-switch
Replace radio button group with a single click-to-toggle button.
Merge branch '1969-persistent-switch'

closes #1969