Fixed JIRA PUSH-311 : Push not working with portlets

git-svn-id: http://anonsvn.icesoft.org/repo/icepush/trunk/icepush@40507 8668f098-c06c-11db-ba21-f49e70c34f74
Fixed JIRA 300 : NPE is thrown when invoking addMember(...) and removeMember(...)

git-svn-id: http://anonsvn.icesoft.org/repo/icepush/trunk/icepush@40517 8668f098-c06c-11db-ba21-f49e70c34f74
Fixed JIRA PUSH-312 : Missing ice.push.access_token and ice.push.realm in add-group-member.icepush

git-svn-id: http://anonsvn.icesoft.org/repo/icepush/trunk/icepush@40521 8668f098-c06c-11db-ba21-f49e70c34f74