[fix bug 973387] Allow curators to change accepting_new_members field.
[fix bug 983100] Do not auto-add people to staff group.
Merge pull request #856 from glogiotatidis/delete-staff

[fix bug 983100] Do not auto-add people to staff group.
[fix bug 983218] Remove 'url' from Website External Account.

Website External account doesn't need a 'url'. With 'url'
ExternalAccountForm.clean will try to clean it and it'll remove trailing
/.
Merge pull request #857 from glogiotatidis/no-website-url

[bug 979203] Remove 'url' from Website External Account.
Update link for requesting an API key on Bugzilla
Replace PIL with pillow.
Merge pull request #846 from glogiotatidis/973387

[fix bug 973387] Allow curators to change accepting_new_members field.
Merge pull request #859 from glogiotatidis/pillow

Replace PIL with pillow.
[fix bug 979825] Add Mozilla Reps to External Accounts.
[bug 973387] Add required star to new member criteria.

Commit 5f7a0df partially undid commit 115c837. This commit fixes that.
[fix bug 984298] Check that identifier exists before cleaning.
Merge pull request #862 from glogiotatidis/984298

[fix bug 984298] Check that identifier exists before cleaning.