gui, man: Update docs & translations

gui/default/assets/lang/lang-pl.json

@@ -109,6 +109,7 @@
     "Files are moved to date stamped versions in a .stversions folder when replaced or deleted by Syncthing.": "Pliki przenoszone są do wersji oznaczonych datą w folderze .stversions kiedy są zastępowane bądź usuwane przez Syncthing",
     "Files are protected from changes made on other devices, but changes made on this device will be sent to the rest of the cluster.": "Pliki są zabezpieczone przed zmianami na innym urządzeniu, jednak zmiany w tym urządzeniu będą wysłane do reszty.",
     "Filesystem Notifications": "Powiadomienia systemowe",
+    "Filesystem Watcher Errors": "Filesystem Watcher Errors",
     "Filter by date": "Filtruj według daty",
     "Filter by name": "Filtruj według nazwy",
     "Folder": "Folder",
@@ -117,6 +118,7 @@
     "Folder Path": "Ścieżka folderu",
     "Folder Type": "Rodzaj folderu",
     "Folders": "Foldery",
+    "For the following folders an error occurred while starting to watch for changes. It will be retried every minute, so the errors might go away soon. If they persist, try to fix the underlying issue and ask for help if you can't.": "For the following folders an error occurred while starting to watch for changes. It will be retried every minute, so the errors might go away soon. If they persist, try to fix the underlying issue and ask for help if you can't.",
     "Full Rescan Interval (s)": "Interwał pełnego skanowania (s)",
     "GUI": "GUI",
     "GUI Authentication Password": "Hasło",