Create basic User model (including passwords).
still don't understand unlink/untracked errors
Take2 ch6
Take2 in mod/users ch6
Merge branch 'modeling-users'

Conflicts:
	spec/models/user_spec.rb~
Initial signup page tests
7.4.1
Finish user signup
More confusion merging sign-up in master
Add SSL in production
Commit for Heroku App crash
More trouble with deployment
Still fixing heroku ch7
Ch7 probs heroku
Ch7 heroku probs
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