removed redundant app.js file from root directory
refactored mainView into seperate views for list of all, done and not done todos
refactored navView and corresponding template
refactored tagsView out of mainView
added comments
Merge branch 'gh-pages'

Conflicts:
	css/style.css
	index.html
	js/routers/router.js
	js/views/filterdoneview.js
	js/views/filtertodoview.js
	js/views/mainview.js
	js/views/tagsview.js
	js/views/todosview.js
navigation links moved to LHS, alignment for buttons and input fields fixed, button borders removed re: #8
Merge pull request #5 from ackl/master

Master