Initial work on Rails 4 support!
Take back pg gem
Fixed nullify attribute.
Cleaned tests
Fixed and cleaned some tests.
assert_equal
Fixed assignment of attributes by URL.
Refactored some code.
Make sure projects#new works
Fixed associations.
Make sure update works with associations.
Less code is better ...
Refactored whitelist_extras
Use concerns for controller extensions
For the moment do not debug assets.
When there's a popup we don't want link to list
Show 'Back to list' when there's an input.

This happens on "Insert Picture".
Less lines to mantain ...
Refute
Less lines of code ...