Merge pull request #6 from harry1989/master

Added the navigation controller to show/hide login/signup/logout, Merging the changes since @skusunam has already taken an initial look and review the changes once merged.
Merge branch 'master' of https://github.com/GetRTI/getrti-ui

Conflicts:
	app/css/app.css
	app/index.html
UI changes for search

UI changes for search
Changes for the navigation
 * Added the template to show the file images and their content for each page (binding between <section> tag and model is not working need srinivas's help)
 * Fixed the merge issue in the app.css
 * Using the angular carousel directive to show multiple pages
 * Angular modal is not working exactly, it doesn't shown the contents
 properly