Merge branch 'master' into integrate_voting
added autocomplete with gender filter
added scopes to teacher and student

added scopes: name_search, female, male
finished server side of ajax autocompletion
added category id information to seeds
added scopes for categories
refactoring and error-msg changes
added haml gem
removed unnecessary comments from gem file
fixed bug in voting#commit
switched to HAML
removed turbolinks
configured asset pipeline

with css and js compression
reorganized assets
added jquery ui gem
removed jquery-ui gem added it manually
linked css and js to jquery ui
changed jquery ui to flick theme
added check for emptiness to scopes in teacher ...

 and student model
improved autocompletion (server side)