+ haml
homepage: moved markup to haml file
still moving stuff to haml files
views are better dumber
minor cleaning
passing context to exhibits, moving exhibits markup to haml files
gitignore: + db/
big cleanup
gitignore: + .sass-cache/
+ gem 'sass'
implemented basic sass stylesheet with sass engine
fixed url to stylesheets, removed unnecessary layout: true declaration
fix: made layout apply only to pages
sass engine: fallback to scss if sass file not found
improved timesheet table display
timesheet exhibit: added passing column_names to view
added zurb foundation scss and js in vendor/
stylesheet: importing zurb foundation
stylesheet: some improvements
styling improvements