Updated mediawiki/extensions
Project: mediawiki/extensions/DonationInterface  a4ac3dcc61b25bedffebd97735209e33168aa1a2
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Logging Cleanup:
Searched for log lines that deserved to be qualified as LOG_ERR or something more severe, and added what I feel is a vaguely appropriate log level.
Added a setting that will, when unset, suppress the avalanche of LOG_DEBUG level statements that we usually don't want.
Also some documentation. Gasp.

Change-Id: I5a8b92bedcdd5613c7a16a111acbc840fb5d7925