This enables directory sorting by clicking on the header for the column
you want to sort. It also pops up a different context menu for items in
the directory view. The behavior for the context menu items still needs
to be implemented.
This adds several new columns to the directory view. It adds a last
modified timestamp, a logo for the type, human-readable file sizes, and
permissions. Several of these are configurable via the
config/settings.json file.
It turns out that WebKit uses its own prefix for user-select so I'm adding this everywhere we currently define user-select, as well as a few new places
