Added tests for System.String and fixed issues that were discovered
Added tests for System.String and fixed issues that were discovered


Saltarelle/SaltarelleWeb,ProdigySim/SaltarelleWeb,n9/SaltarelleWeb,n9/SaltarelleWeb,n9/SaltarelleWeb,drysart/SaltarelleWeb,n9/SaltarelleWeb,Saltarelle/SaltarelleWeb