Change log for version 0.5.3

Added badges for the Beets exclusive functions. These functions are not present within vanilla Bootstrap.
Selected sidebar menu items can now show a little colored line to the left to more clearly indicate that it is active.
Updated to Bootstrap 5.1.1.
Updated to Fontawesome 5.15.4.

Changed body background from light grey to white.
Sidebar menu items and icons are now a little lighter (more white) when using the dark theme.
Card headers are now white as default instead of light grey.
The card header and footer are now flexbox items with a fixed height of 54px.
The modal header is now styled like the card header.
Misc: Trying a new style without cards in the Change log and Getting started pages.

The hover effect on the dark sidebar was white. It is now a dark grey color.
The accordion background was light grey when it should have been white. This was because the accordion background color is the same as the body background, but since it has been changed (back to) white this issue was resolved.
When using the .card-table class and <tfoot></tfoot> the bottom border was not removed. This has been fixed. Also, the border above the table footer should have been black but was light grey. This has also been fixed.