Several small resolve fixes, fix public langauge

 - Re-delegate events after re-rendering twinkles
 - Conditionalize groups when setting events for anonymous users
 - cursor: pointer for twinkles
 - Change "advertise" language from "List link publicly?" to "Show up in
   public seraches?"
Avoid multiple 'name available's in group edits
Fix clock graph sort bug
Shring clock button labels if they're too long
Improve semantics for adding point set
Fix several points of unity bugs

 - Improve discoverability of "edit" button for titles
 - Add back button for history
 - Rejoin room when soft navigating
 - display list of point sets when soft navigating
Escape URL chars in pad names
Add test for special chars in pad
Encode pad names before saving