Remove generated help, you will need to run sphinx locally in order to have online help

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
Maven ant tasks no longer used to download jars

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
extras now only needs to gather up the uDig documentation

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
Remove original headless build scripts

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>