Error messages (FE)

[MariusJulius]

Problem: Error messages are too general and visible for too short amount of time.

Expected: Error messages should be visible for longer time and be more descriptive so errors could be reported and more easily troubleshooted:

For server errors we can't add more specific description as it could be security threat.

To-do:

• Adding explanation for error messages with code e.g 504 (connection timeout etc) - (separate task)
• Extending the time for showing the error (or leaving visible until closed) - for being able to make screenshot or copy error
• Remove errors spamming - eg 5 same messages in a row.

Other error related tickets: https://github.com/keeleinstituut/tv-tolkevarav/issues/664 https://github.com/keeleinstituut/tv-tolkevarav/issues/578

[KaarelKa]

1. Error alerts will no longer hide on their own. They need to be dismissed manually.
2. Error spamming - The general issue here was with some request retry logic. This is fixed, but let me know if you find any other places where this happens.

[plakitkelly]

Tested in 20.06 - it's OK