Fixed some typos and outdated details. #14428

Change-Id: I65291025e35ba73eabed830b8db66c2ce040319d
Updates to portal chapter; project creation, Liferay portlet development (Liferay Maven profile, Vaadin Liferay archetype, Liferay IDE), etc. #10819

Change-Id: I11ee1441b8a79a835bcd9647dcec761353e4f617