adds option to keep cfgp open on wifi save

// if true (default) then stop the config portal from autoConnect when wifi is saved
    void          setDisableConfigPortal(boolean enable);

Name will change

WiFiManager.cpp

@@ -727,7 +727,7 @@ boolean  WiFiManager::startConfigPortal(char const *apName, char const *apPasswo
 
   if(!_configPortalIsBlocking){
     #ifdef WM_DEBUG_LEVEL
-      DEBUG_WM(DEBUG_VERBOSE,F("Config Portal Running, non blocking/processing"));
+      DEBUG_WM(DEBUG_VERBOSE,F("Config Portal Running, non blocking (processing)"));
       if(_configPortalTimeout > 0) DEBUG_WM(DEBUG_VERBOSE,F("Portal Timeout In"),(String)(_configPortalTimeout/1000) + (String)F(" seconds"));
     #endif
     return result; // skip blocking loop
@@ -850,7 +850,7 @@ uint8_t WiFiManager::processConfigPortal(){
             _savewificallback();
           }
           if(!_connectonsave) return WL_IDLE_STATUS;
-          shutdownConfigPortal();
+          if(_disableConfigPortal) shutdownConfigPortal();
           return WL_CONNECTED; // CONNECT SUCCESS
         }
         #ifdef WM_DEBUG_LEVEL
@@ -869,7 +869,7 @@ uint8_t WiFiManager::processConfigPortal(){
           #endif
           _savewificallback();
         }
-        shutdownConfigPortal();
+        if(_disableConfigPortal) shutdownConfigPortal();
         return WL_CONNECT_FAILED; // CONNECT FAIL
       }
       else if(_configPortalIsBlocking){
@@ -2899,6 +2899,17 @@ void WiFiManager::setEnableConfigPortal(boolean enable)
     _enableConfigPortal = enable;
 }
 
+/**
+ * toggle configportal if autoconnect failed
+ * if enabled, then the configportal will be de-activated on wifi save
+ * @since $dev
+ * @access public
+ * @param boolean enabled [true]
+ */
+void WiFiManager::setDisableConfigPortal(boolean enable)
+{
+    _disableConfigPortal = enable;
+}
 
 /**
  * set the hostname (dhcp client id)