LRDOCS-519 Added tool for removing unused images from a document's images directory
Moved uninstalling Social Office subsection to the end of the Installation section
Merge pull request #506 from jrao/LRDOCS-519

http://issues.liferay.com/browse/LRDOCS-519
Merge pull request #507 from jrao/LRDOCS-518

http://issues.liferay.com/browse/LRDOCS-518
Merge pull request #508 from jrao/soffice-installation-reorg

Moved Uninstalling Social Office section to the end of the Installing Social Office section
DevGuide - Remove orphaned images.
Merge pull request #510 from jhinkey/remove-images

DevGuide - Remove orphaned images.
Merge branch 'master' into LRDOCS-518