JERSEY-1992: Provide examples for WLS

 - creating new *-wls-project-src.zip for webapps
 - added README-WLS.html
 - updated maven-war-plugin to 2.4

Change-Id: I820e6921ccf378688050981f75a6cdf8dc87040e
Fix for JERSEY-2003: OsgiRegistry should use AccessController.doPrivileged method to invoke Bundle.loadClass
 - wrapped Bundle.findEntries in addition as per it's javadoc

Ps2: Rebased, changed exception thrown from OsgiRegistry.loadClass

Change-Id: I9e84c4840841d9242fe65735ac49d298f62dab22
Signed-off-by: Jakub Podlesak <jakub.podlesak@oracle.com>
Merge "Fix for JERSEY-2003: OsgiRegistry should use AccessController.doPrivileged method to invoke Bundle.loadClass  - wrapped Bundle.findEntries in addition as per it's javadoc"
Merge "JERSEY-1992: Provide examples for WLS"