Added PACL generation tool for dev guide plugin security chapter
Updated PACL properties section of dev guide.
LRDOCS-347, Added section covering the web content staging feature that allows site administrators to only publish the latest approved version of a web content article; also discussed the  portal property.
Add definition for PACL property security-manager-portlet-bag-pool-portlet-ids and update security-manager-environment-variables property.
updated template names and fixed typos
update image title
LRDOCS-327, Added a section to the Themes chapter of the Dev Guide covering the resources importer plugin
LRDOCS-327, Added Plugins SDK to /devGuide/code and added a test-resources-importer theme there; this theme is styled just like the classic Liferay theme but imports the resources from the test-resources-importer-portlet
LRDOCS-327, Updated Resources Importer section
LRDOCS-327, Added test-resources-importer-theme-6.1.20.1.war to /devGuide/code
Ran ant clean to remove extra files from devGuide's Plugins SDK
LRDOCS-327, Replaced EE Plugins SDK with CE Plugins SDK, replaced EE test-resources-importer-theme with CE test-resources-importer-theme
LRDOCS-327, Updated Resources Importer section of Dev Guide, pointed to resources-importer examples on Github
LRDOCS-327, Updated Resources Importer section of Dev Guide based on feedback from Jim
LRDOCS-327 For docroot/WEB-INF/src/resources-importer directory structure, put directory and files names in code font
Wordsmith dev guide resources importer section
LRDOCS-327 List how to copy each type of resource to a theme
LRDOCS-327 Outline steps for developing and testing a theme and its resources
LRDOCS-327 Added json files and descriptions to directory structure, including the required folder naming conventions.
Merge pull request #424 from jhinkey/LRDOCS-384-pacl-gen

Added PACL generation tool docs to chapter 13