Fix bug 948041 - "Is basket working?" management command

New command is "manage.py check_basket"
Merge pull request #766 from caktus/948041-is-basket-working

Fix bug 948041 - "Is basket working?" management command
[fix bug 979837] Add Mozilla Webmaker to External Accounts
Merge pull request #851 from mishravikas/fix_979837

[fix bug 979837] Add webmaker to External Accounts
[fix bug 930999] Add username_not_url validator to external accounts.

Refactor username_not_url validator

Simplify username validator

Change _lazy to _

Simplify username_not_url
[bug 930999] Add ExternalAccountForm tests.
[fix Bug 931359]Adds vouchees info to the profile page

Conflicts:
	mozillians/phonebook/views.py
	mozillians/templates/phonebook/profile.html
Bug 931359 - added vouched profiles field with privacy support.