Switch all sites to their real user backends

[michielbdejong]

• [ ] https://github.com/pondersource/sciencemesh-php/issues/143
• [x] https://github.com/pondersource/sciencemesh-php/issues/144
• [ ] https://github.com/pondersource/sciencemesh-php/issues/145
• [ ] https://github.com/pondersource/sciencemesh-php/issues/146
• [ ] https://github.com/pondersource/sciencemesh-php/issues/147
• [ ] https://github.com/pondersource/sciencemesh-php/issues/148
• [ ] https://github.com/pondersource/sciencemesh-php/issues/149