Added specs for partner associations
Added ApplicationController#check_password

It should be used as a before_filter for actions, that need a password
confirmation.
Minor improvements.
Refactored the CV creation process.
Refactored the attachments upload process.
Refactored contact model and controller.
Cleaned EmployeesController
Refactored UsersController
Cleaned ListsController
Updated locales.
Refactored ListsController
Added ActsAsComment module.
Cleaned PolymorphicParents module.
Use rails class_attribute for PolymorphicParents
Use an implicit report title.
Define default per_page in the models.
Added Searchers

To extract some search logic from the models and stay DRY.
Fixed ApplicationSearcher#search_join_table
Cleaned Contact model
Cleaned the reports.