[electrophysiology_browser] Replace Physiological Annotations with Events

[jeffersoncasimir]

This PR aims to improve the current compliance to the BIDS standard. Loris-MRI counterpart: #1041 Partially addresses #8910.

This replaces references to annotation files with references to event files.

This PR deletes *_annotation_* tables. The corresponding required event tables already exist.

+minor improvements to the EventManager and AnnotationForm components.

This PR brings in the following limitations:

• Events can no longer be created via the interface (support coming soon)
• Events can be modified, but the currently supported fields are by default read-only or disabled (Name and time)
• HED tag support is extremely limited (better support in imminent PR: #9033)

~TODO: Raisinbread modifications~

TODO: Get official server-side solution + Add to documentation.

• [ ] Determine required request time limit
• [ ] Determine required memory allocation limit
• [ ] Determine procedure for increasing when needed

Both of the above needed to be increased for certain requests.

[driusan]

@regisoc can you review this?

[regisoc]

I will put that here so we do not forget them. Note after tests:

• Event download button disabled or not working.
• Error epoch.properties is undefined following that process:
  • open event panel
  • edit one event
  • submit this event
  • close the event submit with the top-right "x".

[regisoc]

@jeffersoncasimir let me know if you need another round of test this morning.