lang: Add --errors-only to suppress all warnings/suggestions

lang/lang-check.py

@@ -307,6 +307,9 @@ def main():
     parser.add_argument(
         "--no-suggest", action="store_true",
         help="Disable suggestions")
+    parser.add_argument(
+        "--errors-only", action="store_true",
+        help="Only check errors")
     parser.add_argument(
         "--pot", action="store_true",
         help="Do not check translations")
@@ -331,6 +334,10 @@ def main():
         print("{}: file does not exist or is not a regular file".format(args.po), file=stderr)
         return 1
 
+    if args.errors_only:
+        args.no_warning = True
+        args.no_suggest = True
+
     # load the symbol map to supress empty (but unused) translation warnings
     msgids = None
     if args.map: