Add achievements UI to player profile

resources/lang/en.json

@@ -243,8 +243,6 @@
     "personal_player_id": "Personal Player ID:"
   },
   "achievements": {
-    "test": "Test",
-    "test_desc": "This is a test achievement.",
     "win_no_nukes": "Win Without Nukes",
     "win_no_nukes_desc": "Win a free-for-all match without launching any nukes."
   },

resources/playerAchievementMetadata.json

@@ -1,7 +1,4 @@
 {
-  "test": {
-    "difficulty": "Medium"
-  },
   "win_no_nukes": {
     "difficulty": "Hard"
   }