Many small UI bugfixes

[akochari]

Description

This PR contains many small bugfixes and interface changes that solve things we noticed over the past couple of weeks.
Relates to SS-790, SS-771, SS-768, etc.

Checklist

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• This pull request is against develop branch (not applicable for hotfixes)
• I have included a link to the issue on GitHub or JIRA (if any)
• I have included migration files (if there are changes to the model classes)
• I have included, reviewed and executed tests (unit and end2end) to complement my changes
• I have updated the related documentation (if necessary)
• I have updated the release notes (releasenotes.md)
• I have added a reviewer for this pull request
• I have added myself as an author for this pull request
• In the case I have modified settings.py, then I have also updated the studio-settings-configmap.yaml file in serve-charts

[sandstromviktor]

Great changes. I think everything works as expected. I've added two comments.