gui, man, authors: Update docs, translations, and contributors

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

@@ -31,7 +31,7 @@
     "Are you sure you want to remove device {%name%}?": "Weet u zeker dat u apparaat {{name}} wilt verwijderen?",
     "Are you sure you want to remove folder {%label%}?": "Weet u zeker dat u map {{label}} wilt verwijderen?",
     "Are you sure you want to restore {%count%} files?": "Weet u zeker dat u {{count}} bestanden wilt herstellen?",
-    "Are you sure you want to upgrade?": "Weet u zeker dat u wilt upgraden?",
+    "Are you sure you want to upgrade?": "Weet u zeker dat u wilt bijwerken?",
     "Auto Accept": "Automatisch aanvaarden",
     "Automatic Crash Reporting": "Automatische crashrapportage",
     "Automatic upgrade now offers the choice between stable releases and release candidates.": "Automatisch bijwerken biedt nu de keuze tussen stabiele releases en release canditates.",
@@ -307,7 +307,7 @@
     "Syncthing has been shut down.": "Syncthing werd afgesloten.",
     "Syncthing includes the following software or portions thereof:": "Syncthing bevat de volgende software of delen daarvan:",
     "Syncthing is Free and Open Source Software licensed as MPL v2.0.": "Syncthing is gratis en opensource software onder licentie van MPL v2.0.",
-    "Syncthing is restarting.": "Syncthing is aan het herstarten.",
+    "Syncthing is restarting.": "Syncthing wordt opnieuw gestart.",
     "Syncthing is upgrading.": "Syncthing is aan het bijwerken.",
     "Syncthing now supports automatically reporting crashes to the developers. This feature is enabled by default.": "Syncthing ondersteunt nu automatisch rapporteren van crashes naar de ontwikkelaars. De functie is standaard ingeschakeld.",
     "Syncthing seems to be down, or there is a problem with your Internet connection. Retrying…": "Syncthing lijkt gestopt te zijn, of er is een probleem met uw internetverbinding. Opnieuw proberen...",