Sends updated status down after adding/updating/removing preview card.

Split up from submitCompose() so it can be called elsewhere

Removed autoplay on extended-video-player. Removed test border on <video />.

border style for reference

Set new max description. Removed compact prop. Updated variables, classes and positions.

Merge branch 'feature/updating_media_aspect_ratio' of https://code.gab.com/gab/social/gab-social into develop

Merge branch 'feature/group-posts-in-timeline' of https://code.gab.com/gab/social/gab-social into develop