LRDOCS-325 Expanded instructions on adding portlets to a page
Fixed markdown figure declaration, fixed a few typos
Added new section on searching for specific kinds of content in liferay, searching for comments and attachements, and the differences between the Search portlet, Web Content Search portlet, and the Blogs, Message Boards, Wiki, Documents and Media, and Web Content portlet's search bars
LRDOCS-481 Resolved merge conflict
LRDOCS-481 Renumbered images
LRDOCS-481 Fixed image URLs
Merge pull request #494 from jrao/LRDOCS-481

http://issues.liferay.com/browse/LRDOCS-481 and http://issues.liferay.com/browse/LRDOCS-487