PLINK-130 moved sample model convenience methods out of IdentityManager into their own class
Merge branch 'merge/PLINK-130' of github.com:picketlink/picketlink into merge/PLINK-130

Conflicts:
	modules/idm/impl/src/main/java/org/picketlink/idm/internal/ContextualIdentityManager.java
PLINK-130 restructure credential packaging to make it more developer friendly
[PLINK-130] - Fixing compilation errors because of the IdentityLocator usage.