Internal: Start moving basic helpers into lib/base.php.

And lib/redirect.php.
Remove obsolete pages.

And ensure that old versions of these pages won't be executed.
Believe all modern browsers inherit TR background to TD

and support > CSS selectors.
Amuse myself with multiply-colored paper rows.

If a row is multiply-colored, then show stripes.

Because CSS3 repeating-linear-gradients don't work reliably on
table rows (the offsets are odd), use images.
Tag colors: In a paper list with colors, use borders to separate.

Not "zebra striping." Also canonicalize colors and simplify styles.