Renamed devilry.apps.send_email_to_students to devilry.devilry_send_email_to_students.

See #634.
Removed unused files from devilry.apps.developertools.

See #630.
Removed devilry/apps/developertools/management/commands/dev_build_extjs.py.

See #630.
Removed unused files from devilry.apps.developertools.

See #630.
Removed devilry.apps.developertools.fixtures. Not in use.

See #630.
Removed devilry.apps.developertools.scripts. Not in use.

See #630.
Removed devilry.apps.developertools.tests.

The module it tested has been removed. See #630.
Moved dev_autodb from to devilry.apps.developertools to devilry.project.develop,

and renamed it to devilry_developer_old_autodb.

See #634.
Moveddevilry.apps.developertools.middleware to devilry.project.develop.middleware.

See #634.
Removed devilry.apps.developertools.

All its submodules has been removed or moved.

See #630 and #634.