build: Bump miscellaneous devDependencies to latest

Updates:
* grunt                  0.4.4 -> 0.4.5
* grunt-banana-checker   0.1.0 -> 0.2.0
* grunt-contrib-clean    0.5.0 -> 0.6.0
* grunt-contrib-csslint  0.2.0 -> 0.3.1
* grunt-contrib-qunit    0.4.0 -> 0.5.2
* grunt-jscs             0.6.1 -> 0.7.1

Also sort the devDependencies to be alphabetical.

Change-Id: Ia92194a3ff79a28cc25275a2168388790af51d57
Merge "build: Bump miscellaneous devDependencies to latest"