start to refactor navigation
added portal menu
implemented column header
fixed a few bugs
added header click event
added header click event
added bower componenet
added navgation specs
create navigation-column module
updated navigation specs
separated navigation item into a module
updated dist
wip: navigation routing
updated navigation testing
added old .bower_components to gitignore
added for-attribute for labels and pointer class for matrix icons
fixed content-column index
fixed a usage bug
updated navigation states
fixed a state bug