Change location of woproject.jar download to WOCommunity Jenkins server.
Add project name to generated jenkins.build.properties file
Change the location of WOInstaller.jar download

This fixes the problem of the WebObjects DMG being moved by Apple to a new location.  The WOCommunity WOInstaller already handles the move, but the original WOInstaller as provided was broken, breaking the Jenkins builds.
Comment update
Merge pull request #6 from fuego-github/master

Update location of WOInstaller.jar
Fix WO_LOCAL_ROOT_FOR_THIS_BUILD variable name in two places.
Add mkdir for required directories that Git may have stripped out of a Fluffy Bunny project
Add commands to clear out any left over build artifacts from prior builds, just in case.