Added lite response to Ideas and Sparks controllers.
Removed commented out lines from Jawns index view.
Moved to token authentication to replace instances of username authentication.
Removed usernames from IdeasController specs.
Merge pull request #77 from maxluzuriaga/lite-sparks-ideas

Lite response for Sparks and Ideas
Merge pull request #78 from maxluzuriaga/enable-tokens

Enable token authentication for Spark/Idea/Comment creation/deletion
Fixing merge difficulties