Improving performance

Conflicts:
	WordPress/WordPress.xcodeproj/project.pbxproj
Nukes NSRegularExpression+Helper
Merge remote-tracking branch 'origin/develop' into issue/1707-improves-performance
Merge pull request #1708 from wordpress-mobile/issue/1707-improves-performance

Issue #1707: Improves stringByRemovingScriptsAndStrippingHTML performance