restore from v2: app/assets/{fonts,images,stylesheets}/*

from: https://github.com/zhdk/madek/blob/e4be79783e3270b499fb0397eb3f3bd00a0a2a02/app/assets/

This reverts PARTS OF commit "Delete all in app/*, vendor/*, config/initializers/*  we do not need right now" (ca03d906f235fcbb61f8b1290c4e7cca5e6079fc).
restore from v2: vendor/**

from: https://github.com/zhdk/madek/blob/e4be79783e3270b499fb0397eb3f3bd00a0a2a02/vendor/

This reverts PARTS OF commit "Delete all in app/*, vendor/*, config/initializers/* we do not need right now" (ca03d906f235fcbb61f8b1290c4e7cca5e6079fc).
restore from v2: app/helpers/application_helper.rb

from: https://github.com/zhdk/madek/blob/e4be79783e3270b499fb0397eb3f3bd00a0a2a02/app/helpers/application_helper.rb
env: default to 'ugly' HAML output in all environments

- in the browser (inspector) it makes no difference
- due to whitespace handling some thing can appear broken in dev which would be fine in production = debug hell
gemfile: group frontend gems
Gemfile: retire 'haml_coffee_assets'

R.I.P @netzpirat
Gemfile: re-add compass-rails (needed for IXT Sass framework)
add "Living Styleguide"

- convert old static styleguide to HAML
- build fully dynamic, "living" styleguide, make resourcefull-ish
- add basic spec test, trying out screenshots
- doc: add some research links, ideas
- disable some js for merging
- move logo image to proper place
- styleguide: fix images (assets paths) and links (#foo)
- fix spec/spec_helper_feature.rb
- uberadmin: disable animation since sass/compass fails on the import