Videos: Unload player on close photoprism#979

Navigation: Refactor feature flags photoprism#996

UX: Improve dark theme colors

UI: Rename Explore back to Moments photoprism#859

Frontend: Navigation code clean-up

Frontend: Update translations.pot

UX: Always display play buttons on videos for mobile users

Frontend: Update translations.pot & json

Signed-off-by: Michael Mayer <michael@liquidbytes.net>

Config: Improve ARM64 README