Updates seeds file to use on Heroku
Orders Causes in victory index
Adds margin to Causes title on mini-view
Styles the causes block to be on the left of the page
Moves the causes block up in the Petition index
Moves the causes block up in the Victory index
Added input for Petition goal
Validates presence of goal in Petition creation/update
Passes @recipients in PetitionsController#update in case there are validation errors on the petition
Makes petition and user images have rounded edges instead of being round