ch 6.1.5
ch 6.2
ch 6.3.3
ch 6.4, basic user model with secure pw
ch 6.5 exercises, with some todos
ch 7.1.4: add debug info in dev; users resources for routing; basic gravatar integration; basic sidebar
ch 7.2 signup form, basic tests, html
ch 7.4.2 working form, strong params, error messages, flash