Add package_json grunt task to update package.json

package.json contains a list of locale files, that was manually updated until
now. This PR adds a grunt task to update package.json and registers it to run
on release.

fixes #1766
Add a newline at the end of component.json
Convert 4 remaining languages to locale
Merge pull request #1807 from ichernev/fix-remaining-lang

Convert 4 remaining languages to locale
grunt-jscs-checker renamed to grunt-jscs
optimizing clone first cut
moar speed
Add test for momentProperties and cloning
Merge pull request #1808 from ichernev/optimize_clone

Optimize clone