gui, man: Update docs & translations

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

@@ -109,6 +109,7 @@
     "Files are moved to date stamped versions in a .stversions folder when replaced or deleted by Syncthing.": "Los ficheros son cambiados a versiones con indicación de fecha en una carpeta \".stversions\" cuando son reemplazados o borrados por 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.": "Los ficheros son protegidos por los cambios hechos en otros dispositivos, pero los cambios hechos en este dispositivo serán enviados al resto del grupo (cluster).",
     "Filesystem Notifications": "Notificaciones del sistema de archivos",
+    "Filesystem Watcher Errors": "Filesystem Watcher Errors",
     "Filter by date": "Filtrar por fecha",
     "Filter by name": "Filtrar por nombre",
     "Folder": "Carpeta",
@@ -117,6 +118,7 @@
     "Folder Path": "Ruta de la carpeta",
     "Folder Type": "Tipo de carpeta",
     "Folders": "Carpetas",
+    "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)": "Full Rescan Interval (s)",
     "GUI": "GUI",
     "GUI Authentication Password": "Password de la Interfaz Gráfica de Usuario (GUI)",