Working webrockit-ui into a build system

I want to start moving towards packaging this software with rpm and
versioning it later on. These bits will help us move towards that model
and away from git cloning to install.
Fixing a build issue

added the -r to remove the folders. Also added bits to fix the war file
name when built in a workspace directory
Resolving an issue with the rpm build

The rpm build was failing due to /etc not being created. Added the -p
to the mkdir
Added a dependency on the java rpm.

Webrockit-ui requires java. Also added in the config file as an option
and placed a default file in during install.
Allow jenkins to set the revision with the build number for now.
Merge branch 'pr/7'

Conflicts:
	webrockit-ui.war