Code review comment for lp:~jtv/launchpad/bug-643345

For the TestGetBzrCommitterID test case, remove the tearDown, and instead
do something like:

committer = DirectBranchCommit(...)
self.addCleanup(committer.unlock)

The test should also work in the DatabaseFunctionalLayer rather than the
ZopelessDatabaseLayer. Unless there is a reason why you are running it in
that layer, in which case, document it.

How about "Launchpad Translations on behalf of %s"?