LRDOCS-606 Updated section titles to use capital letters
LRDOCS-667 Moved section on basic site management from UG chapter 3 to UG chapter 2; reorganized chapter, fixed transitions, chapter introductions, and summaries
LRDOCS-606 Added information on organizing site hierarchically, added information on and screenshot of site directory and site map portlets
Merge pull request #570 from jrao/LRDOCS-606

http://issues.liferay.com/browse/LRDOCS-606