[ENTESB-1394] sanitize file name from wrap: protocol

(cherry picked from commit 94a0028cdd3f1de648dfe63f8bb5277f36cba933)
added a list of presentations on fabric8
remove cruft
typo
add a bit more docs on pulling the docker images first
#1046 lets load the ZK user from zookeeper
added links to the latest beta download
update the download links to the new beta4 release