Cleanup modules imports.
Implement API methods, add admin panel controls and more data.

[fix bug 795385] Add API controls to Admin panel.
[fix bug 769070] Include more data in API.
[bug 769069] Implement API methods.

[fix bug 763717] Add search functionality to API.

Search for groups, skills, languages, username, ircname, country,
region, city, last_name, first_name, is_vouched.

[fix bug 795380] Add API privacy controls.
Cleanup user forms, remove duplicate code.
Make display_name UserProfile attribute a property.

Remove display_name attibute from model and rename unused full_name
property to display name. This way the reduce by one the db signal
executed on User model save, the duplicate information on the database
and we prevent differentatiation between User and UserProfile models.
[bug 807351] Moving Chief/Commander update scripts into repo.
[bug 807351] Add ES index update command.
Merge pull request #328 from glogiotatidis/752997

Phonebook API.
Merge pull request #336 from glogiotatidis/807351

Chief update scripts.
[fix bug 795380] Update wording in privacy settings.

Update wording and appearance in user profile / privacy settings.
Merge pull request #337 from glogiotatidis/795380

[fix bug 795380] Update wording in privacy settings.
[fix bug 807928] Update templates to use {% trans %} variables for urls.
Merge pull request #338 from glogiotatidis/807928

[fix bug 807928] Update templates to use {% trans %} variables for urls.
[fix bug 808744] Allow unvouched users to edit their privacy settings.
[fix bug 808827] Use digest and base64 on calculated usernames to avoid crossing 30 char limit.
[fix bug 795380] Privacy controls default to allow community and mozilla sites.
Merge pull request #342 from glogiotatidis/808827

[fix bug 808827] Use digest and base64 on calculated usernames to avoid ...
Merge pull request #340 from glogiotatidis/808744

[fix bug 808744] Allow unvouched users to edit their privacy settings.
Merge pull request #341 from glogiotatidis/privacy

[fix bug 795380] Privacy controls default to allow community and mozilla...
Demo fixtures for API testing.
Merge pull request #343 from glogiotatidis/dev-fixtures

Demo fixtures for API testing.