Making overholt work with recent dependencies

[arnuschky]

1. update of tests
   • adjust model factories to new Factory-Boy
   • enable login system for recent Flask-Login (disabled by default for tests)
   • obtain CSRF token from login form using Flask-Fillin (old method didn't work anymore)
2. update of forms imports for new wtf
3. update all dependencies

[mattupstate]

@arnuschky Thanks for taking the time to do this. My only criticism is that flask.ext is going to be deprecated. There's no reason to use it.

[peterdemin]

@mattupstate, why you say flask.ext is going to be deprecated? I see http://flask.pocoo.org/docs/extensiondev/#extension-import-transition says it's ok.

[mattupstate]

@peterdemin mitsuhiko/flask#1085

[arnuschky]

Ah really? I thought it's the other way 'round. :) Will fix it tonight.

[arnuschky]

I tested this, but none of the release version of the different flask extensions used by overholt seem to support this. It's a recent change, I guess we have to wait for it to trickle down. (flask-security is among them, btw)

[mattupstate]

@arnuschky I'm sorry, but I'm not sure I understand. I use flask_<extension_name> in all my projects.

[arnuschky]

Ah, I misunderstood, sorry. I thought that it changes to flask_ext.<extension_name>. Works now.

[arnuschky]

Rebased previous commits, removed accidentally committed changes to config files.