Added multi region support when provisioning an add-on.

If an add-on has multiple regions available, the user will be prompted to select
a region.
Corrected spelling and lint errors.
Updated database creation to prompt for region.

Corrected a couple of lint errors and added a prompt for selecting the region
when provisioning a database using `$ modulus mongo create`.

This addition requires the the deploy-targets route be loosened to no longer
restrict the route to administrators.
Corrected an issue with database creation.

Database names are now correctly recognized.
Merged in feature/multi-region-addons (pull request #23)

Added multi region support when provisioning an add-on.
1.1.0