Use django-pipelight to load CSS files
Use CSSMin as CSS compressor for pipelight

CSSMin is also added as dependency to make it available in the virtualenv.
Use django-pipeline to bundle all JS files into one file

This is the first step towards minification of the JS files.
Reorganize static files

@aschampion and I reorganized all the static files so that there is now some
logic behind their location. The basic layout is now

  css/
  images/
  js/
  libs/

It should be obvious where most of the files belong. Libraries are kept as
folders including all their parts (js, css and images) in the libs folder.
Encode Raphel's pie chart library file as UTF-8
Use Django pipeline to load all CSS and JavaScript files

@aschampion and I made django-pipeline load all library and CATMAID files. New
files should now be declared in

  django/projects/myste/pipelinefiles.py
Rename VNC-Browser's treelines.js file due to name collision

Unfortunately, there is no way to have application specific rules in
django-pipeline. All patterns are therefore tested against the static files of
all applications. This can lead to name collisions if a file exists in two
applications. This is what happened with treeline.js and it is therefore renamed
in the vncbrowser application.
Add a missing semicolon at the end of Raphael library
Add pipeline file finder
Pipeline: disable wrapping in anonymous functions

Our code just doesn't work with this, yet.
Pipeline: add more documentation to static files configuration
Merge branch 'add-django-pipeline'