Add button to delete a post
*Fix syntax error for delete button
Fix accidental deletion of post list iterator

 Restored:
 <% current_user.posts.each do |post| %>

Since I was there, fixed the validation for locations, changed :location
to :name
Add button to delete a post
Fix syntax error
Nest categories in locations and let admins create
nests post.create under locations
Render errors if post form doesn not save
fixed type
validate location_id and backfill previous posts