Changes:
- Added caption "Miscellaneous toggles" to visually separate the
link-hints checkbox from the others.
- Made the text for the two link-hint character sets the same.
- The "Show advanced options" link now spans two columns, so it does
not affect its column's width, so the layout doesn't change when
the options below the fold are expanded.
- Added a fixed footer containing the help text and the save button.
- The text of the save button now changes when it is enabled.
(I sometimes find it hard to tell whether its been activated or
not.)
- Control-Enter anywhere on the page saves all options.
- Aligned the entire options table left, instead of centered. This
is the chrome style. However, it also makes it easier to get the
alignment right between main table and the footer.
- Change width of main wrapper such that it actually matches the
table's width. This aligns the right edge of the bar under the
title with the right edge of the second column of the table.