Moved index.html from SPIFFS to program memory. Removed dependencies to SPIFFS. Also, we can use a different partition scheme with much more program space instead of reserving some of it for SPIFFS.

src/controller.cpp

@@ -378,7 +378,6 @@ String Controller::json() {
 	json["uptime"] = millis() / 1000;
 	json["free_heap"] = ESP.getFreeHeap();
 	JsonObject versions = json.createNestedObject("versions");
-	versions["spiffs"] = spiffs_version;
 	versions["ota"] = OTA_VERSION;
 	#ifdef VERSION
 	versions["release"] = VERSION;