Update jscs and jshint config

Continue specifying our coding style more accurately in jscs,
and phase out more deprecated jshint coding style options.

jshint:
* Update to grunt-contrib-jshint v0.10.0 (jshint v2.5.0).
* Remove coding style option "curly" (already covered by jscs).
* Remove coding style option "smarttabs" (already covered by jscs).
* Remove option "regexp".
* Enable new option "freeze" (prohibits changing native prototypes).
  http://www.jshint.com/blog/new-in-jshint-oct-2013/#option-freeze
* Re-order to match http://www.jshint.com/docs/options/

jscs:
* Update to grunt-contrib-jshint v0.4.4 (jscs v1.4.5).
* Format .jscsrc file in a more spacious way and order the
  properties less arbitrarily (using the jscs's readme order).
* Improve rule "requireCurlyBraces": Add more keywords that
    should have their code block wrapped in curly braces.
* Improve rule "requireMultipleVarDecl": Use onevar instead of true.
* Remove rules for "sticky operators", these rules are buggy
    and have been deprecated. Using the SpaceBefore/After rules
    for Unary and Binary operators instead.
* Enable rule "disallowYodaConditions".

Change-Id: I6f385e8860e91d9ef4d1f5abecf517d36af45565
Merge "Update jscs and jshint config"