Changes Application layout to have all navigation at top in nav
Removes weird conditionals from User profile partial
Removes public/index.html and sets root to Petition index
Creates Petition show view and contrller action
Modifies Petitions list partial to only show if petitions are passed and aren't empty
Displays only contact information which is not blank
Renders list of petitions on User show view
Modifies Application layout to include New Petition link
Changes how flash is displayed
Creates PetitionsController#new, #create, and Petition new view