Change a few things in settings:
    - Added myself as admin.
    - Add ALLOWED_HOSTS which is required in production.
    - Modified the logging config so that Django doesn't send error emails in DEBUG mode.
    - Fixed indentation
Move available units to the settings.
activating word search unit
Merge branch 'edit_settings' of github.com:mdebbar/alfanous

Conflicts:
	src/alfanous-django/settings.py
enable the exception handling for Alfanous project