Fix buildWAR target

Fist of all thank you for integrating JGut 3.0.0-SNAPSHOT! I wonder why line 163 in RepositoriesPage.java is failing to load welcome.mkd? It is in place in gerrit-gitblit.jar in root:

jar -tf gitblit.jar | grep -i welcome.mkd
welcome.mkd

Instead of welcome message i see this (from Gerit GitBlit Plugin):

Failed to read default message from welcome.mkd!

I am going to check the vanilla war and was trying to build it and it failed:

BUILD FAILED
/home/davido/projects/gitblit_src/build.xml:272: org.moxie.MoxieException: Unable to resolve: com/gitblit/GitServlet.class

com/gitblit/GitServlet.class could not be located on the classpath.

	at org.moxie.ant.MxGenJar.execute(MxGenJar.java:405)

So i adjusted the path. Not sure if GitServlet.java should be moved?

Thanks
David