Merge pull request #99 from ncthis/master

Integrating self-registration with carbon `claims` management
Changing the position of comment modal
Sending the user roles to be rendered
API endpoint to get roles matching a query (for autocomplete)
Fixing niceScroll and removing tabs for show-assets gadget
Resolving UES-519
Renaming show-assets gadget to gadget-template-explorer and creating gadget-explorer
Fix to support MySQL
Merge pull request #100 from splinter/master

Fix STORE-418
Route for roles autocomplete
Adding roles to access the asset
Squshing a few unused things
Sending the a list of states that can configure roles to caramel
Better error handling for 400s
Show/hide roles selector depending on the state
Integrating roles autocomplete and submission on LC change
Rendering the roles tokenInput (autocomplete) on modal
Config for role configuration states and changing comment_requried
Merge remote-tracking branch 'upstream/master'