Fixed: JENKINS-14828 - Rebuild plugin crashes when used in conjuction with Extended Choice Parameter
Added the Jelly file that makes it possible to change the value of the parameter when rebuilding (simple string input box). Unfortunately the type of parameter is not serialized in the job, so it's hard to present a nice gui when rebuilding based on the type of extended choice parameter. We could use the current job configuration, however this might conflict with builds that ran in the past with a different configuration.