Improvements to deploy chapter

[olasitarska]

• moving it earlier in the process so we can deploy more often
• slowing things down a little bit - a lot of new things happen there very fast

[kampfschlaefer]

Maybe the first deployment should happen without custom domain name?

Deploying a django app is a lot of stuff. If the basic deployment is reachable on 'fantasyname.heroku.com' as soon as possible, maybe even before lunch, this should give a nice success. Then its back to coding, followed by some more deployment then some Internet+DNS stuff.

Just my two cents...

[olasitarska]

This is basically a duplicate of #79 (on which I am now working on :))