Added a function that sends out email verification

Text based at the moment because accounts-password doesn't support sending html aswell which is lame
Added some tests for registerUser
A better way of using custom urls
Removed the custom email template for now

Theres no real need in it at the moment until people want it customisable, because of the url rewriting from the last commit
Verify email link functionality

A bad link just sends you back to the signup page and sets the error variable for you, saves pissing about rendering a new template
Added a 404 error handler

Just shows the notfound.html template
Merge branch '0.2.0' of github.com:ircanywhere/ircanywhere into 0.2.0