Further, we remove the "check invitation" button and extract some methods to our new ProgrammingGroups object in JavaScript.
Co-authored-by: Sebastian Serth <Sebastian.Serth@hpi.de>
This change allows us to use the session ID immediately for the connection_change and connection_status methods. Hence, we can identify different browser sessions of the same user.
* This commit refactors the table used to store events.
* We also use a UUID as session identifier in the synchronized editor to support multiple concurrent tabs opened by the same user.
* Further, we renamed some methods to make them easier to distinguish.
