Translation Updates.

- Added addon_preferences so we can save users preferences into a json file.
- Made translation slightly simpler

This mostly works just have to figure out why we can't update description on reload (There only update on blender restart).

resources/translations/en_US.json

@@ -1,5 +1,8 @@
 {
     "messages": {
+      "Language.auto": "Automatic",
+      "Language.en_US": "English",
+      "Language.ja_JP": "日本語",
       "Quick_Access.label": "Quick Access",
       "Quick_Access.import_export.label": "Import/Export",
       "Quick_Access.options": "Quick Access Options",

resources/translations/ja_JP.json

@@ -1,5 +1,8 @@
 {
   "messages": {
+    "Language.auto": "Automatic",
+    "Language.en_US": "English",
+    "Language.ja_JP": "日本語",
     "Quick_Access.label": "クイックアクセス",
     "Quick_Access.import_export.label": "インポート/エクスポート",
     "Quick_Access.options": "クイックアクセスオプション",