Let open project when another user is in #1962
Description
We need to make sure, and improve the UX, when a second user wants to open the study:
- lock the study if the maximum allowed users in the study is reached, fixed in 🐛Ensure locked state is shown when RTC_MAX_NUMBER_OF_USERS is set osparc-simcore#8181
- they can't change the current wallet
- they need to have access to the current wallet
- the study options window should by bypassed
Some backend improvements:
- node locking, node locking osparc-simcore#8170
- let the frontend know whether a service allows collaboration
- prevent another user from stopping a node if he/she did not start it
- the project owner might still be able to close the service? maybe any project owner?
- admin should be able to lock a project for maintenance
- when a user is disconnected, his/her services are auto-closed?
- review how websocket events are transferred (it's a mess at the moment, and add tests)