Dashboard linkedTo inconsistency

[aavilesd]

The dashboard fails to represent some links of users to events due to some actions of Indico not triggering update of Redis linked_events object or design flaw.

This is a list of cases where the links are found not to be updated as expected.

Abstracts:

• Abstract submitter is listed as attendee. Being submitter doesn't mean one is attending. Maybe a new icon representing this kind of relation with an event is needed.
• The presenter of an approved abstract becomes the presenter of a contribution. This link is not created in the process.

Contributions:

• Removing speaker/author/coauthor from 'Contribution full edition menu' in a Conference doesn't remove link to event.

Others:

• Adding user as chairman doesn't add link to event. He should be listed as with management rights.