Improvements in loading statuses interface

See merge request !42

Merge branch 'develop' of ssh.gitgud.io:lambadalambda/pleroma-fe into feature/load-new-statuses-in-heading

Wakarimasen/pleroma fe highlight notice

See merge request !41

Merged from develop, made 'new notices' into a 'show new' button placed on the heading element, updated headings and buttons to be more consistent with new changes (log-in, notifications/read, conversation/collapse), changed bottom 'load older' block to not disappear on click to keep screen from scrolling and changed its styling more consistent with everything else.

issue #1 - better nsfw image loading

See merge request !37

preload the image when it is toggled, but wait to replace it until
it has loaded.

Unify notice timelines to make changes easier.

See merge request !36

Make use of template literals instead of string concat.

See merge request !34

Fix the very visible padding offset in unread notification caused by the border.

See merge request !35

Make the profile background use a new calculated color using the theme

See merge request !33

Fix/various style fixes all over the place

See merge request !32

Mark unread notifs with the red line, make read notifs base01 again, center the heading text and move the button to the right of the panel.

Align attachments with usercard, make buttons use theme colors, prettify login form, more border radii adjustment for consistency.

Pako was very slow in Chromium.

This has been tested.

This reverts commit 0e1ab69c.

User card visual improvements

See merge request !29