#JC-1881: Rework Spring Security Patch and send Pull Request:
 *Corrected Sid implementations. Now methods isPrincipal and getSidId declared in UniversalSid interface
 *Extended classes according reworked patch
 *SidFactory interface moved to jtalks-common
#JC-1881:Rework Spring Security Patch and send Pull Request:
*Unit tests fixed
*Added license headers
#JC-1881:Rework Spring Security Patch and send Pull Request:
*Beans configured according new patch
#JC-1881:Rework Spring Security Patch and send Pull Request:
*Documentation added
#JC-1881: Rework Spring Security Patch and send Pull Request:
 *spring-security-acl version changed to 3.1.1.JAVATALKS-PATCH3.RELEASE