Some Notice::saveNew cleanups.
Some Notice::saveNew cleanups.

* No need to check $source's value before inserting
* No need to update the notice if the $uri was known in advance

darcs-hash:20080902173804-57fc3-496ceaf8192694db43e62f7af1f57785a1a16a01.gz

frankmullenger/centralflirt,frankmullenger/centralflirt,frankmullenger/centralflirt