Adding sort function dropdown.
Small changes to dropdown sort button.
Sorting semi-functional; sorts by title. [axof:82]
Merge branch 'cait-filter' of https://github.com/russblackburn/Textbook-App
Merge branch 'ryan-addpage' of https://github.com/russblackburn/Textbook-App

Conflicts:
	www/js/controllers.js
	www/templates/tab-dash.html