Fixed BatchUpload bug which created duplicate photo keywords on import.
Improvements to batch upload module.

	Factored out servlet method delegation framework to new class (DispatchServlet).
	Assigned common keys to forwarding pages in BatchUpload servlet to improve consistency.
	Modified JSP pages relating to BatchUpload servlet keyed pages.
	Removed minor cruft from above code.
	Fixed minor bug in displaying max media upload size.
Updated security constraints for BatchUpload module.
Updated logging configuration for simpler BatchUpload module debugging.
Merge branch 'mantamatcher.org' of https://github.com/holmbergius/Shepherd-Project into mantamatcher.org