build: Update jscs and jshint

jshint:
* Update to grunt-contrib-jshint v0.10.0 (jshint v2.5.0).
* Remove coding style options covered by jscs.
* 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-jscs-checker 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).
* Enforce more details of our coding style
* Get rid of the unsable "sticky" operator rules which have been
  deprecated in favour of using other rules instead that are able
  to enforce this more accurately.
  - disallowLeftStickedOperators: Remove deprecated rule.
    * Ternary covered by requireSpacesInConditionalExpression.
    * Rest covered by requireSpace{Before,After}BinaryOperators.

  - requireLeftStickedOperators: Remove deprecated rule.
     * Comma covered by disallowSpaceBeforeBinaryOperators.

  - requireRightStickedOperators: Remove deprecated rule.
    * Logical not (!) covered by disallowSpaceAfterPrefixUnaryOperators.

See also If46b94ce1, Ib731f11b1 and I0b0cadbc5 in oojs/core.

Also:
* Update grunt-contrib-watch to latest upstream version.
  Change log at https://github.com/gruntjs/grunt-contrib-watch/blob/v0.6.1/CHANGELOG#L1-L17

Change-Id: I6c5a34afea8b05a3dca617897c192594df06ca90