Downgrade informational messages from warning level

Fixes 13464

In upgrade scenarios informational messages that indicate old config files are being imported into the new config are now being treated as informational rather than warnings which may alarm the reader.

gramps/gen/config.py

@@ -403,9 +403,9 @@ def emit(key):
     # If not, let's read old if there:
     if os.path.exists(os.path.join(USER_CONFIG, "keys.ini")):
         # read it in old style:
-        logging.warning("Importing old key file 'keys.ini'...")
+        logging.info("Importing old key file 'keys.ini'...")
         CONFIGMAN.load(os.path.join(USER_CONFIG, "keys.ini"), oldstyle=True)
-        logging.warning("Done importing old key file 'keys.ini'")
+        logging.info("Done importing old key file 'keys.ini'")
     # other version upgrades here...
     # check previous version of gramps:
     fullpath, filename = os.path.split(CONFIGMAN.filename)
@@ -424,9 +424,9 @@ def emit(key):
             digits = str(int(match.groups()[0]) - i)
             previous_grampsini = os.path.join(fullpath, "gramps" + digits, filename)
             if os.path.exists(previous_grampsini):
-                logging.warning("Importing old config file '%s'...", previous_grampsini)
+                logging.info("Importing old config file '%s'...", previous_grampsini)
                 CONFIGMAN.load(previous_grampsini)
-                logging.warning(
+                logging.info(
                     "Done importing old config file '%s'", previous_grampsini
                 )
                 break