add thing summary
handle long names better
only show important points
Filter events shown in thing summary by importance.

This necessitates potentially handling zero things selected and reshowing things if a different amout of points is selected.
it should filter out points not in the date range
pass the related type id along with participants.

This is needed so that when doing an edit, it can do diffs properly, since this is now needed for saving roles
display all times/dates in thing summary taking into account their offset
Show the time range of events if they are less than a single day.

This necessitates returning both the start and the end and rewriting bits that accessed what used to refer to the date.
only highlight the paths around the highlighted point
zoom map to selected point
Merge pull request #20 from twistedvisions/thing-summary

Thing summary