WIP: Shadi: partial integration of PDF.js
WIP: we made that shit work by creating a new sources layout.
added pdf_viewer(js,css) to isolate the sources layout js and css requirements.
move pdf related javascript and css files under pdf namespace and only require directories in both pdf_viewer(js,css) and application(js,css)
add icons in pdf reader toolbar
implement pdf.js
Merge branch 'master' into pdfjs_refactored

Conflicts:
	app/views/sources/show.html.erb
WIP: JTR & DNJB: remove texture pngs from css, remove hard-coded test for pdf view
WIP: JTR/Dan: fix errors. All tests pass. // WIP: Navbar in pdf-viewer and snippets don't work.
brandon & dan: implement snippet functionality in pdf reader
Merge branch 'master' into pdfjs_refactored
Create snippet without redirect, fixed delete buttons for snippets/topics on topic#index
Merge branch 'master' into keep-reading-after-snippet

Conflicts:
	app/assets/javascripts/snippet.js
	app/views/layouts/application.html.erb
Fixed snippet create bug and made test pass again
Merge pull request #53 from gopher-snakes-2013/keep-reading-after-snippet

Keep reading after snippet