gui: Allow to translate action and type in Recent Changes modal (#8548)

Currently, action and type are both displayed only in English. This
commit makes it possible to translate both of them.

Signed-off-by: Tomasz Wilczyński <twilczynski@naver.com>

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

@@ -499,10 +499,14 @@
     "Your SMS app should open to let you choose the recipient and send it from your own number.": "Your SMS app should open to let you choose the recipient and send it from your own number.",
     "Your email app should open to let you choose the recipient and send it from your own address.": "Your email app should open to let you choose the recipient and send it from your own address.",
     "days": "days",
+    "deleted": "deleted",
     "directories": "directories",
+    "file": "file",
     "files": "files",
+    "folder": "folder",
     "full documentation": "full documentation",
     "items": "items",
+    "modified": "modified",
     "seconds": "seconds",
     "theme-name-black": "Black",
     "theme-name-dark": "Dark",