Fix "NLS Unused message" error in eclipse log view

Messages.properties has two properties with the same name but different value
JBIDE-13747 to a topic branch; expanding an extension point with new optional data
documentation and further cleanup
cleanup of unused. No need for backwards compat here
update parent pom version to 4.1.0.Alpha2
JBIDE-13750 test failures
Master test fails for ejb3 classpath container
Adding a comment flag so this code doesn't get missed next time
set update site version to 4.1.0 (not 4.0.0) and remove Snapshots label
JBIDE-13597 improved dl link tooltip
jbide-13711 typo
Some files are missing copyright header

Replaced in eclipse as \A(\w|package) and replaced with copyright text 2007-2013
Simple removal of warnings. Very safe commit. No jira
JBIDE-13733 updated to work for new esb and drules runtime handlers