Primrose - Authentication Screens

Standard authentication actions for Primrose.

Went with blue to invoke feelings of familiarity, and slightly rounded corners to add some accent without feeling too playful.

Initial build of the app will have no authentication - everything will be stored locally. If there is interest in online backups (which I think there will be) authentication and data backups will be added.

One of the major points of Primrose is anonymity. No data will be used for marketing, or sold anywhere. Signing up is strictly for disaster recovery, or for syncing across multiple devices.

I think its time we stop letting services collect our data and do with it as they wish.