Add Player Shortcuts to FAQ

See merge request !27

add button to reencode videos, closes #380

Closes #380

See merge request !26

Ignore double tap on status bar

See merge request !25

Double tap to seek +-15s

See merge request !24

Date and time functions in SQL are highly incompatible between different
db engines. All queries must work with sqlite and mysql/mariadb.

Update video.js to version 7.6.5

See merge request !20

Plugins:
* videojs-contrib-hls: Dropped for native hls/dash support
* videojs-resolution-switcher: No longer maintained. Manually fixed to
work with new version
* videojs-markers: No longer maintained. Still works as expected.
* videojs-hotkeys: Updated

The (manually fixed) resolution switcher still looks a bit different.
Also video.js dropped support for older Internet Explorer and their
flash support.

Datum der Vorlesung auf der Playerseite anzeigen (#373)

Closes #373

See merge request !18

Nächste Aufnahmen: Hörsaal nennen (#375)

Closes #375

See merge request videoaginfra/website!19

Benachrichtigungen für Kapitelmarker bei Moderatoren deaktiviert

See merge request videoaginfra/website!17