Localisation updates from http://translatewiki.net.

Change-Id: I0ca1626e310d157f9d9b23dc179aea509096c591
Localisation updates from http://translatewiki.net.

Change-Id: Ia8ac07a0a21588e2ec7aeecd04a2271d89f24b43
Localisation updates from http://translatewiki.net.

Change-Id: Ic6f1d331adde5f21297daa55e2ddc9fd587c23c4
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