Update new17.rst

Typo at 

" Though it should all pretty much work (howeve,r.."

corrected to however
Typo at setup

Changed from "you should see 1.5.4..." to "you should see 1.7"
Django import error

from django.shortcuts import render instead of django.template

I tested and it works just with shortcuts.
Merge pull request #69 from flaviobarros/master

Typo at new17.rst