Added section on the UI for embedded portlets in the *Mangage -> Page* interface
Fixed two typos in Control Panel section of User Guide
LRDOCS-408 Updated the Control Panel section of the User Guide with info on the *Clear the direct servlet cache* option and the *Reindex all spell check indexes* options
LRDOCS-391, wordsmithing on site templates and page templates sections of User Guide, also fixed some typos
Clarified introduction to site templates section of User Guide
LRDOCS-391 Added details to site templates section of User Guide, replaced organization site with site in example
LRDOCS-408 Added more information to the User Guide on the options for clearing caches from the Control Panel
Applied consistent formatting to the section titles of User Guide chapter 3
LRDOCS-391 Added section outlined what actions are allowed/disallowed for site administrators and site template administrations for sites set up to propagate changes from a site template
LRDOCS-391 Updated User Guide section on propagating changes from sites templates to sites; discussed how importing portlet preferences and portlet data works
Merge pull request #434 from jrao/LRDOCS-407

https://issues.liferay.com/browse/LRDOCS-407
Merge pull request #435 from jrao/LRDOCS-408

https://issues.liferay.com/browse/LRDOCS-408
Merge pull request #437 from jrao/LRDOCS-391

https://issues.liferay.com/browse/LRDOCS-391