Store hashed passwords into database

[passiomatic]

Store salted and hashed password and Fever apikey into database.

See:

• http://blog.codinghorror.com/your-password-is-too-damn-short/
• https://docs.python.org/2/library/hashlib.html#hashlib.pbkdf2_hmac

Since different algorithms can be available on a user platform Coldsweat could store salted passwords with a prefix specifying the algorithm used, something like:

sha1:cc4a5ce1b3df48aec5d22d1f16b894a0b894eccc

[passiomatic]

Changed my mind: let's use new Peewee's PasswordField instead: http://docs.peewee-orm.com/en/latest/peewee/playhouse.html?highlight=passwordfield#PasswordField

We need to add a bcrypt dependency but it solves a few potential issues while dealing with the availability of different algorithms on different platforms.

[oz123]

Peewee in version 3 dropped password field, but it's not complected to implement similar good logic. Passlib has good examples.

[passiomatic]

Done while porting codebase to Python 3 583bd5c