Merge pull request #4 from ml242/master

Merges in upstream changes, addresses the styling
'About.'
Fixed up mobile display, enabled file input button for mobile devices, changed default chart legend formatting to position at bottom with smaller font (improves mobile displa in particular).
Sort chartInputs by title/filename.
Added favicon.
dropchart changes in the js
Merge branch 'master' of github.com:anthonyserious/dropchart
Host jQuery in CDN by default.  Comment out for local.
Change color scheme and jumbotron.
Fix wrong css inlude.
Change jumbotron font.
Minor code reformatting.
Another minor formatting change.
Change input button formatting, moved buttons to a button group.
Help page.
Zipped folder upload error message, plus some style changes.
Fix dragenter/dragover events for firefox.
Changed button styles, added bubble examples, and modified styled stepped area chart example.
Button to display JSON request.  Also changed background color.
stashing this away for a sec