Merge pull request #272 from modilabs/design_improvements

Multiple fixes (manifest, performance) + Design improvements (error messages, print css, print button, language selector) + new branding
big error. Removed caching.
Merge pull request #273 from modilabs/design_improvements

big error. Removed caching.
Merge pull request #70 from modilabs/master

removed server caching (big error)