LRDOCS-986 Copied  Eduardo Garcia's RTL Hook documentation from https://github.com/jhinkey/liferay-plugins/pull/6
Merge branch 'rtl-hook' of https://github.com/mwilliams2014/liferay-docs into rtl-hook-mike

Conflicts:
	devGuide/en/chapters/11-customizing-with-hooks.markdown
Resolve conflict 2