Merge branch 'fas3_pingou_lost_password' into FAS_3.0

 + Adding basis feature lost_password.
Add password strength checker feedback.
Fix missed typo from 38d6993
Move password recovery to settings route.
Move flash messages to site page.
Keep user on lost-password's page if login isn't right.
Expand get_people and get_groups

These methods can now return either the list of all the people/groups or
the total number of people/groups in the database.

This allows us to drop the get_groups_count and get_people_count methods.
Provide to the compute_list_pages_from the total number and the number we want per page
Fix People.paging for the change in provider.get_people and compute_lists_pages_from
Use the same method whether there is page specified or not, avoids the redirect
Expand the paging method to account if we are paging search results
Expand the get_people to search for people matching a given pattern
Add logic to search a specific user, either by its user id or its username
Drop the redirect and adjust for changes in get_groups and in compute_list_pages_from
Expand the get_group to allow search for a group by its name or display_name
Fix the search form in the home page to actually perform the search
Add logic to search groups
Mark information string for translation