DDF-738 Added the setting of the Metacard.RESOURCE_URI in the requestProperties when calling the the Source retrieveResource methods (through the download manager classes).  It gets set from the actual Metacard.RESOURCE_URI attribute and not the value that is passed in by the user.

Conflicts:
	core/catalog-fanout-framework/src/main/java/ddf/catalog/fanout/FanoutCatalogFramework.java
DDF-768: Added description to fanoutEnabled metatype field