User specific motd see once

src/modules/api/api.js

@@ -160,7 +160,11 @@ function GetApp() {
         `User #${id}'s user specific motd is now seen.`,
         logger.GetColor('bluebg')
       )
-      userSpecificMotd[id].seen = true
+      if (userSpecificMotd[id].seeOnce) {
+        delete userSpecificMotd[id]
+      } else {
+        userSpecificMotd[id].seen = true
+      }
       utils.WriteFile(JSON.stringify(userSpecificMotd), userSpecificMotdFile)
     }
   }