ZPE build version

After learning a bit about how Ant works and how great the IntelliJ IDE is, I have finally got automatic build numbers being generated. Prior to this, I would estimate the build versions and as of recently, I have ignored build versions entirely. This changes now with a new Ant script being added to ZPE that will automatically increment the build version every time I compile it. This means every time I test the program (since it is built then too) it will increase by one. Build numbers are useful as it's often the case that users of early builds who try out the early access nightly version will be unable to update to a newer build in the same version because the updater cannot decern the version differences deterministically. This will change now!