check if whole content from page is merged into DEVGUIDE

[wsdwl]

https://www.calconnect.org/resources/testing-tools-and-links/developers-resources

[wsdwl]

Also move reading list for conference

[wsdwl]

Also:

• https://www.calconnect.org/resources/getting-started/caldav-and-carddav
• https://www.calconnect.org/event-reading-list

[wsdwl]

@wsdwl: developers ressources
@douglm : Standards page