Adds a Site::Layout module that handles site_layouts.yml
Refactors `Page#find_elements` and adds specs for `from_cell` option.
Adds a Site::Layout module that handles site_layouts.yml
Removes MassAssigmentSecurity from Message model.
Fix element model spec.
Refactors `Page#find_elements` and adds specs for `from_cell` option.
[Rails 4] permit secure params for UsersContoller
[Rails 4] Adds table reference to ferret search options.