Updating to 1.424 baseline, as the earliest LTS that supports Java 7.
This plugin caused 1.480.3 /configure to throw an error.
AssertionError: class hudson.plugins.throttleconcurrents.ThrottleJobProperty$ThrottleCategory is missing its descriptor in public java.util.List hudson.plugins.throttleconcurrents.ThrottleJobProperty$DescriptorImpl.getCategories().
Merge pull request #4 from jglick/ThrottleCategory-missing-dtor

Global configuration error