Update thirdparty libraries/submodules

Updates multiple libraries/submodules.
All unit tests still pass, extensions should still work. No breaking changes.
Hopefully helps extension developers in using the latest versions.
Fixes #9670.

# jQuery 2.1.0 -> 2.1.1 (May 5, 2014):
http://blog.jquery.com/2014/05/01/jquery-1-11-1-and-2-1-1-released/

# Lodash 2.2.0 -> 2.4.1 (Dec. 2, 2013):
https://github.com/lodash/lodash/wiki/Changelog#v241
New functions:
* `_.constant`
* `_.create`
* `_.mapValues`
* `_.noop`
* `_.now`
* `_.property`
* `_.xor`

# LESS 1.7.0 -> 1.7.5 (Sep. 3, 2014):
https://github.com/less/less.js/blob/master/CHANGELOG.md#175

I didn't go with LESS 2.0.0 (released Nov. 9) as it requires some changes in Brackets (and probably in extensions as well).

# RequireJS 2.1.5 ([866edd0](https://github.com/jrburke/requirejs/commit/866edd0caf9784ccc8d3ecb45d78f51e52eed07e)) -> 2.1.15 (latest master - Nov. 7, 2014):
https://github.com/jrburke/requirejs/compare/866edd0...master
http://requirejs.org/docs/download.html#releasenotes