PLF-5588: Update acme deployment setting in configuration.properties and Readme

Conflicts:
	plf-packaging-resources/src/main/resources/configuration.properties
INTEG-249 Add 2 new properties for Unified Search
Upgrade to parent pom 12
SWF-2623 : Create skin-module branch and update projects versions
Add eXoSkin.war as packaging dependency
Minor fix to share dependency to private build