Add connecttest to webserver

Author: nseidle

Firmware/RTK_Everywhere/WebServer.ino

@@ -334,8 +334,6 @@ bool webServerAssignResources(int httpPort = 80)
         if (settings.enableCaptivePortal == true)
         {
             webServer->addHandler(new CaptiveRequestHandler());
-
-            // TODO: add a handler for /connecttest.txt
         }
 
         // * index.html (not gz'd)
@@ -469,6 +467,11 @@ bool webServerAssignResources(int httpPort = 80)
             webServer->send_P(200, "text/plain", (const char *)icomoon_woof, sizeof(icomoon_woof));
         });
 
+        //https://lemariva.com/blog/2017/11/white-hacking-wemos-captive-portal-using-micropython
+        webServer->on("/connecttest.txt", HTTP_GET, []() {
+            webServer->send(200, "text/plain", "Microsoft Connect Test");
+        });
+
         // Handler for the /uploadFile form POST
         webServer->on(
             "/uploadFile", HTTP_POST, []() { webServer->send(200, "text/plain", ""); },
@@ -1130,6 +1133,10 @@ void createDynamicDataString(char *settingsCSV)
 
         stringRecord(settingsCSV, "batteryIconFileName", batteryIconFileName);
 
+        //Limit batteryLevelPercent to sane levels
+        if (batteryLevelPercent > 100)
+            batteryLevelPercent = 100;
+
         // Determine battery percent
         char batteryPercent[sizeof("+100%__")];
         if (isCharging())