Refactor visualizations.
Remove dead code.
Fix translation.
Remove unneeded action attributes to form elements.
Move search_form mako defs.
Add babel date formatting functions, remove short format for updated and published dates.
Add sessions in admin menu.
Fix link for accounts without email (and slug).
Username is a link from sessions admin.
Remove unnecessary assertions.
Use model.get_user() instead of checking session manually.
Refactor controllers and templates for user/admin views. Use right routers. Add become_admin and become_user debug controllers.
Do not redirect, send unauthorized.
Transform ObjectId to unicode for indexation.
Remove Account.test_cases_id.
Remove scenarios.
Add TODOs.
Merge branch 'cbenz'

Conflicts:
	openfisca_web_ui/controllers/accounts.py
	openfisca_web_ui/model.py
Fix flakes8 errors.
Add TODO.