Remove chatter-repo module, now that repo components are implemented in
Share OAuth
Ensure Chatter dashlet can work with 'my domains' in Salesforce and that
request tokens are requested
  - Added scopes option to dashlet component, pre-populated to
'chatter_api request_token'
  - Add contentEndpointId option to set name of the endpoint used to
load static resources
  - Use a regexp to modify static asset URLs to accommodate different SF
domains