implement ota updater plus minor fixes

99_setup_loop.ino

@@ -23,7 +23,7 @@ void setup() {
   // If we run in to trouble, this can painlessly be removed and the resulting device name will just be longer
   settings.name.remove(devlen+1, 6);
 
-  PRINTLN_SERIAL("Figured out who I am \O/");
+  PRINTLN_SERIAL("Figured out who I am \\O/");
 
   wifi_setup();
 
@@ -37,7 +37,7 @@ void setup() {
   moon_setup();
 #endif
   // Start the cooperative scheduler loops
-  PRINTLN_SERIAL("Done setting up, ready for main loop \O/");
+  PRINTLN_SERIAL("Done setting up, ready for main loop \\O/");
 }
 
 void loop() {