WiFi: allow button action to also disable softAP (#1942)

code/espurna/button.ino

@@ -136,7 +136,11 @@ void buttonEvent(unsigned int id, unsigned char event) {
     }
     
     if (BUTTON_MODE_AP == action) {
-        wifiStartAP();
+        if (wifiState() & WIFI_STATE_AP) {
+            wifiStartSTA();
+        } else {
+            wifiStartAP();
+        }
     }
     
     if (BUTTON_MODE_RESET == action) {

code/espurna/wifi.ino

@@ -700,6 +700,7 @@ void wifiReconnectCheck() {
     #if TELNET_SUPPORT
         if (telnetConnected()) connected = true;
     #endif
+    jw.enableSTA(true);
     jw.setReconnectTimeout(connected ? 0 : WIFI_RECONNECT_INTERVAL);
 }