STANBOL-915: Upgraded Sling maven-lauchpad-plugin to current released version in the trunk. Also upgraded to commons-compress version 1.4 (after the OSGI dependency issue got resolved). This also means that the tika engine no longer requires to embed version 1.4 of commons-compress

git-svn-id: https://svn.apache.org/repos/asf/stanbol/trunk@1443854 13f79535-47bb-0310-9956-ffa450edef68