Update ancient parts of the documentation
Update ancient parts of the documentation

The ssl_verify param is a legacy from khal's wiki page.

credativUK/vdirsyncer,credativUK/vdirsyncer,untitaker/vdirsyncer,mathstuf/vdirsyncer,untitaker/vdirsyncer,tribut/vdirsyncer,tribut/vdirsyncer,hobarrera/vdirsyncer,mathstuf/vdirsyncer,untitaker/vdirsyncer,hobarrera/vdirsyncer