[FS#25] Bug change emails should be less verbose

[LEDE Bugs]

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FS#25 - Bug change emails should be less verbose
User who did this: Ted Hess (thess)
Due Date: [-] -> 01.09.2016

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=25