merge with backend
some changes
changes
Merge branch 'backend' into mmoroz-session

Conflicts:
	app/app.rb
	app/controllers/teachers_subjects.rb
	app/scripts/collections/navMenu.js
	app/scripts/localization/js/dropdownLib.js
	app/scripts/models/subject.js
	app/scripts/routes/navMenu.js
	app/scripts/templates.js
	app/scripts/views/teacherSubjectsGrid.js
	app/styles/styles.css
fixing
implement /login post
add cookies
some changes
add localization
minor changes
some changes for login
clear code for login/profile
Merge branch 'backend' into mmoroz-session

Conflicts:
	app/app.rb
	app/controllers/teachers_subjects.rb
	app/public/json_files/en.json
	app/public/json_files/ua.json
	app/scripts/collections/navMenu.js
	app/scripts/localization/js/dropdownLib.js
	app/scripts/models/user.js
	app/scripts/routes/navMenu.js
	app/scripts/templates.js
	app/scripts/views/teacherSubjectsGrid.js
merge with backend
updated navigation
removed isDisplayed property for navMenuItem
new buttons are added and removed by passing the model to menuCollection:
menuCollection.add({title: "New title", url: "#newURL"})
cleaning code
Merge pull request #21 from vdanyliv/mmoroz-session

Mmoroz session