Merge pull request #1 from informancer/master

Update goals.rst
Django project, first models
Basis development docs
First travis-ci configuration
Fix pip command line in .travis.yml
Doc: Structure and concepts
Documentation: explain some basic concepts
Django admin support for our User model. Adding users still misses some
useful fields for unknown reasons (tixlbase/admin.py:26 does not seem to
do anything, in contrast to documentation).
Code checker configuration
Update developer documentation
Require login for all of tixlcontrol/ except login
Static files management / LessCSS compiler / Bootstrap import
Fix crucial bug
tixlcontrol: Login form
Documentation: Add "runserver" command
Redirect logged in users from login page
Login parameter "next"
Starting with localisation
Add footer to auth templates
Merge branch 'master' of github.com:tixl/tixl