Shows /:username's tweets in profile view
Adds mention_to link helper
Refactors mention_to_links with REGEX
Adds gravatar helper
Adds gravatar
Fixes html error in gravatar helper
merges conflicts
Generates share model
Generates shares controller
Link_to retwet
Updates routes for shares
Fixes error in model
Adds #create and #delete
Defines relationships for share and user
Builds retwet relationship and controller actions
Builds retweets withough retwet id
Fixes params for shares
Adds has_many shares
formats view
Chaanges retwet format