Created the 'activity ticker', and fixed some assorted styling issues.
The 'ticker' is a merger/replacement for the 'All Activity' and 'Timing Filter'. It keeps the same 'passive' functionality as the old 'All Activity' indicator, where it is seemingly always selected but will fade away to accomodate actual selections. It defaults to 'All Activity', but the various latest X seconds" options are available via a drop-down menu.