This change is largely based on changes made by Winston Prakash for Hudson.
The main details about his changes can be found here:

http://issues.hudson-ci.org/browse/HUDSON-8844

I deviated a bit from his changes where it was appropriate (e.g. the
description for allow-signup.html was just plain wrong). Also, there
was a lot of collateral damage from formatting in his changeset, which
I have factored out.

I tested the basic functionality of this change and it seems to be OK.

found in hudson.model. Keep this file and add an equivalent in jenkins.model.
Signed-off-by: NNigel Magnay <nigel.magnay@gmail.com>

Now config.jelly can be converted into groovy.
Verified that the auto-selection of the proper view type is working.

monitor fix.

identical copies into WEB-INF/lib.

As a result, which one gets chosen is up to the file system /
classloader, and hence we failed to catch it sooner.