Merge pull request #733 from GeorgeErickson/patch-2

Backbonejs github url and author update
temp fix file structure for isotope lib
fix file names
remove bad named files
Merge pull request #735 from pnommensen/master

temp fix file structure for isotope lib
Merge pull request #734 from PeterDaveHello/modernizr_v2.8.0

add modernizr v2.8.0
isotope failover mainfile
Add PouchDB v2.2.0
Merge pull request #737 from nolanlawson/pouchdb

Add PouchDB v2.2.0
Add the Oppia player script.
add jquery v1.11.1
add jquery v2.1.1
add modernizr v2.8.1
add tablesorter v2.16.3
Merge pull request #740 from PeterDaveHello/modernizr_v2.8.1

add modernizr v2.8.1
Merge pull request #739 from PeterDaveHello/jquery

Jquery update 2.1.1 and 1.11.1
add specified mainfile for jquery v 1.4.4 and 2.0.0
Merge pull request #741 from PeterDaveHello/tablesorter_v2.16.3

add tablesorter v2.16.3
select2 update
Create minify-sans-regexp.min.js

Part of the [official repo](https://github.com/getify/JSON.minify/blob/master/minify-sans-regexp.js)
[seems faster](http://jsperf.com/json-minify/2/)