Collaborators improvement

[luka-nextcloud]

• "Saved" text is too wide
  • Could be combined with participants, showing a circle indicator on unsaved changes, and in the participants menu we can show extra text for "Last saved x minutes ago" on top of the participant list → let’s do this one
    • Adjust behavior on desktop, but keep "Saved" text as additional info
  • Could collapse into a checkmark icon on mobile, could even be actionable to save
  • Could show asterisk next to filename, but filename is not present on mobile
  • Could be in a subline below the title, but filename is not present on mobile
• People avatars could be a bit smaller → from 44px to e.g. 36px
• Avatars should move a bit closer together to save space
• Author color borders could be var(--color-main-background) when author colors are not enabled so there is separation, and when author colors are not enabled the colors don’t make sense yet anyway.
• Always show all participants in dropdown (including yourself so you know your own color)