chore(gui, man, authors): update docs, translations, and contributors

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

@@ -99,6 +99,7 @@
     "Device": "Gléas",
     "Device \"{%name%}\" ({%device%} at {%address%}) wants to connect. Add new device?": "Device \"{{name}}\" ({{device}} at {{address}}) ag iarraidh ceangal. Cuir gléas nua leis?",
     "Device Certificate": "Teastas Gléis",
+    "Device Group": "Grúpa Gléasanna",
     "Device ID": "Aitheantas gléis",
     "Device Identification": "Aitheantas gléis",
     "Device Name": "Ainm an Ghléis",
@@ -169,6 +170,7 @@
     "Filter by date": "Scag de réir dáta",
     "Filter by name": "Scag de réir ainm",
     "Folder": "Fillteán",
+    "Folder Group": "Grúpa Fillteán",
     "Folder ID": "Aitheantas an fhillteáin",
     "Folder Label": "Lipéad Fillteáin",
     "Folder Path": "Conair an Fhillteáin",
@@ -279,6 +281,8 @@
     "Off": "As",
     "Oldest First": "An Chéad duine is sine",
     "Optional descriptive label for the folder. Can be different on each device.": "Lipéad tuairisciúil roghnach don fhillteán. Is féidir a bheith difriúil ar gach gléas.",
+    "Optional group for the device. Can be different on each device.": "Grúpa roghnach don fheiste. Féadfaidh sé a bheith difriúil ar gach feiste.",
+    "Optional group for the folder. Can be different on each device.": "Grúpa roghnach don fhillteán. Féadfaidh sé a bheith difriúil ar gach gléas.",
     "Options": "Roghanna",
     "Out of Sync": "As Sioncronú",
     "Out of Sync Items": "As Míreanna Sioncronaithe",