Refactoring the JobTypeManager to allow for reloading of jobtype plugins without a bounce
Reordered call code to reduce likelihood that an non-threadsafe change
would be introduced.
Finishing unfinished comment in the plugin set.
Also had second thoughts about the JobTypeManager changes in the recent commit. A final variable should be sufficient to prevent people from changing it.
Adding license header comments
Merge branch 'master' of https://github.com/azkaban/azkaban2 into jobtypeupdate
Adding spaces between if( and for(.
Formatting changes as per the review suggestions
Merge pull request #222 from rbpark/jobtypeupdate

Refactoring the JobTypeManager to allow for reloading of jobtype plugins without a bounce