build: Bump miscellaneous devDependencies to latest

Updates:
* grunt        0.4.2 -> 0.4.5
* grunt-jscs   0.6.2 -> 0.7.1
* grunt-karma  0.8.3 -> 0.9.0
* karma        0.12.21 -> 0.12.23

Also sort the devDependencies to be alphabetical.

Change-Id: I1e6ae378542f078e305526ad599b4d37bd09538c