Closes#3145
- Prevent navigation to the setup screen if Ghost setup
has previously been completed.
- Fix templates that were incorrectly using foreach instead of each.
- Add validation for minimum password length.
- Fix up functional tests and split out tests for setup to a separate
instance of casper because setup requires a new database.
- Add a cleanDatabase task to grunt which resets the database to
new.
fixes#3072
- Change router to handle /ember/setup/
- Adjust doSignup to also handle setup
- Adjust tests and add new where necessary
- Add setup controller, setup validation, setup route
- Adjust casper emberSetup to handle new setup
