Fix Ledmap dropdown in presets

platformio: cosmetic updates
index.js: ledmap: show filename instead of nr
update.htm: remove installed bin prompt
json.cpp: deserializeState: assign loadLedmap from root, serializeState: assign loadLedmap to root / remove from root
presets.cpp: savePreset: assign loadLedmap from sObj
util.cpp: init ledMaps to 0

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "wled",
-  "version": "0.14.0.2.1",
+  "version": "0.14.0.2.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "wled",
-      "version": "0.14.0.1.1_MM",
+      "version": "0.14.0.2.2",
       "license": "ISC",
       "dependencies": {
         "clean-css": "^4.2.3",