clean up targetjson

pxtarget.json

@@ -1,6 +1,8 @@
 {
     "id": "calliopemini",
-    "aliases": ["calliope"],
+    "aliases": [
+        "calliope"
+    ],
     "name": " calliope mini",
     "nickname": "mini",
     "title": "Calliope mini - Blocks / Javascript editor",
@@ -123,8 +125,8 @@
                 "C15": "C_P15",
                 "C19": "C_P19",
                 "C20": "C_P20",
-                "EXT_PWR":"EXT_PWR", 
-                "SPKR":"SPKR",
+                "EXT_PWR": "EXT_PWR",
+                "SPKR": "SPKR",
                 "BTN_A": "BTN_A",
                 "BTN_B": "BTN_B",
                 "MOTOR1": "M_OUT1",
@@ -227,7 +229,6 @@
         "docMenu": [],
         "hasReferenceDocs": false,
         "selectLanguage": true,
-                
         "availableLocales": [
             "en",
             "de",
@@ -241,8 +242,13 @@
             "tr",
             "zh-TW",
             "zh-CN"
-        ]
+        ],
+        "browserDbPrefixes": {
+            "2": "v2"
+        },
+        "editorVersionPaths": {
+            "1": "v1"
+        }
     },
     "ignoreDocsErrors": true
-
 }