Use strict instead of type-converting comparison

This is just implementing a best practice and not solving any currently known problem.
Merge branch 'dev' into Monetization-strict-comparison

Conflicts:
	extensions/wikia/MonetizationModule/scripts/MonetizationModuleTopScript.js
Merge pull request #4914 from Wikia/Monetization-strict-comparison

Use strict instead of type-converting comparison