Commit 47: 1. Minor adjustment to changes made in Commit 46.  if the
start date == end date AND the start hour == end hour AND start minute
== end minute and start minute == 0 AND start hour == 0 THEN the event
is flagged as allay;   2. Fixed a bug in the Location Filter mode that
did not display all events.  3. Fixed a bug on location filtering that
did not filter if the selected value contained single quotes … by using
calls to htmlspecialchars() with ENT_QUOTES to create the HTML for
<option value>