New features and further fixes

Added player rankings and a points system, both your map time ranking
and points, and your overall server points and ranking, will now be
shown on the left. This utilises Zandro's new db sorting features.
Implemented armor type saving with personal teleport, due to a zandro
bug there is no guarantee this will always work.
Replaced bubble sort with Positron's shell sort.
Fixed an armor error in zanrun_actors.