Updated Heroku config parsing.

The format in the heroku toolset changed.
Add raw string for arguments.
Updated secretkey command to set localsettings.

When the secret key is configured in heroku, but not locally, grab the
key from heroku.
Merge branch 'heroku_fixes'
Updated DJANGO_* environment variable parsing.

Added logic to perform integer and boolean conversion on environment
variables before adding them to the settings.

Also moved env parsing after local apps settings so that anything set in
the environment should override settings baked into a project file.
Added test_my_apps management command.

This will only test the apps listed in the MY_APPS setting.
Added run_tests wrapper.

This sets up the environment necessary to run tests.  It will only run
tests for apps listed in the MY_APPS setting.
Removed MY_APPS.

Having MY_APPS and LOCAL_APPS is confusing.  Baseline should be in the
INSTALLED_APPS tuple and LOCAL_APPS is for anything the project using
baseline needs.
Renamed local_apps module to contain underscore.

The convention for a local settings module is local_settings.py, so
stick with that convention.
Renamed test_my_apps to be test_local_apps.

The command gets the apps to test by grabbing the LOCAL_APPS tuple in
the project settings.
Updated bootstrap.sh

This adds clean and superclean options as well as being able to run
unattended.  Works great for setting up an environment for testing.
Merge branch 'baseline_update'