Generate migration, add user_id column to Initiatives
Associate initiatives with users; valadate presence of user_id
Associate users with initiatives
Create initiative partial
Add styling for center-text-alignment
Ensure only signed-in users can access initiatives#new, #create and #destroy
Add @initiatives collection in users#show; move signed_in_user to sessions_helper
Move signed_in_user to sessions_helper (from users_controller)
Rearrange initiatives#index - move link_to new_initiative near top of page, toggle presence of this link based on signed_in?
Rearrange routes
Add section for showing all of a user's initiatives on the user's show page