Log message

Fix for  issue #2 ; Added a setting to catch 404 errors: DBLOG_CATCH_404_ERRORS,
defaults to False;  Issue #4  patched in: is_resolved column in ErrorBatch

	Modify	/trunk/djangodblog/__init__.py	diff
	Add	/trunk/djangodblog/middleware.py	diff
	Modify	/trunk/djangodblog/models.py	diff