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

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

@@ -61,7 +61,11 @@
     "Currently Shared With Devices": "現在共有中のデバイス",
     "Danger!": "危険！",
     "Debugging Facilities": "デバッグ機能",
+    "Default Configuration": "Default Configuration",
+    "Default Device": "Default Device",
+    "Default Folder": "Default Folder",
     "Default Folder Path": "デフォルトのフォルダーパス",
+    "Defaults": "Defaults",
     "Delete Unexpected Items": "Delete Unexpected Items",
     "Deleted": "削除",
     "Deselect All": "すべて選択解除",
@@ -97,7 +101,9 @@
     "Downloading": "ダウンロード中",
     "Edit": "編集",
     "Edit Device": "Edit Device",
+    "Edit Device Defaults": "Edit Device Defaults",
     "Edit Folder": "Edit Folder",
+    "Edit Folder Defaults": "Edit Folder Defaults",
     "Editing {%path%}.": "{{path}} を編集中",
     "Enable Crash Reporting": "クラッシュレポートを有効にする",
     "Enable NAT traversal": "NATトラバーサルを有効にする",