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

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

@@ -128,6 +128,7 @@
     "Error": "Flater",
     "External File Versioning": "Ekstern ferzjebehear foar triemen",
     "Failed Items": "Mislearre items",
+    "Failed to load file versions.": "Failed to load file versions.",
     "Failed to load ignore patterns.": "Failed to load ignore patterns.",
     "Failed to setup, retrying": "Ynskeakeljen mislearre, wurd no opnij besocht",
     "Failure to connect to IPv6 servers is expected if there is no IPv6 connectivity.": "Mislearjen fan it ferbinen mei IPv6-tsjinners wurd ferwachte as der gjin stipe foar IPv6-ferbinings is.",
@@ -373,6 +374,7 @@
     "The rate limit must be a non-negative number (0: no limit)": "It fluggenslimyt moat in posityf nûmer wêze (0: gjin limyt)",
     "The rescan interval must be a non-negative number of seconds.": "It wersken-ynterfal moat in posityf tal fan sekonden wêze.",
     "There are no devices to share this folder with.": "Der binne gjin apparaten om dizze map mei te dielen.",
+    "There are no file versions to restore.": "There are no file versions to restore.",
     "There are no folders to share with this device.": "D'r binne gjin mappen te dielen mei dit apparaat.",
     "They are retried automatically and will be synced when the error is resolved.": "Sy wurde automatysk opnij probearre en sille syngronisearre wurde wannear at de flater oplost is.",
     "This Device": "Dit Apparaat",