NTP use is offered in offline mode

[swede89]

The clock should only support non-ntp operation in AP mode

[swede89]

Steps to solve this issue:

1. create additional settingsAP.html that excludes the option line „NTP usage (yes/no)“
2. adapt the function void createCustomRoute(WebServer *server)
   • add parameter String file
   • replace "/settings.html" by parameter variable name file
3. update function calls „createCustomRoute“ to run it for
   • API using parameter "/settings.html" and
   • AP using parameter "/settingsAP.html"
4. update function void checkConfig(boolean init)
   • update line where ntpUse is retrieved to set boolean tempNtpUse ...
   • strcmp(config.ntpUse, "yes") == 0 and configManager.getMode() == 1
   • we might also consider checking the connected state WiFi.status() == WL_CONNECTED;
   • we might also consider combining this check with the checkWifi function to avoid repetition

[swede89]

1., 2. and 3. dont work.
4. is available in branch bugfixOfflineMode