ICE-10377 Shutdown blocking connection on beforeUnload. This aborts the blocking connection and unblocks the corresponding thread on the server.

git-svn-id: http://anonsvn.icesoft.org/repo/icepush/trunk/icepush@43808 8668f098-c06c-11db-ba21-f49e70c34f74
PUSH-344 Made 'ice.push.browser' cookie secure and have HttpOnly access.

git-svn-id: http://anonsvn.icesoft.org/repo/icepush/trunk/icepush@43809 8668f098-c06c-11db-ba21-f49e70c34f74