update chef repo
first attempt on using Vagrant with Chef
fix Setting and calendar bug caused by turbolinks
update chef submodule
fix Subject spec
improve Setting specs
get rid of cancan aliases

use basic rights: read, create, update, destroy
guard notifications for OS X
add rubocop, change metrics formatter
some refactoring
fixing issues detected by rubocop
ignore Berksfile.lock

fixing issues detected by rubocop
fixes for admin and setup, upgrade gems, fix MiniProfiler setup