Start reworking playoff initialzation

Refactor out common code so that all playoffs are checked to overlapping
teams. Eventually this can fiter out no shows as well.

task #322: Make No Shows be bye's in the playoffs 
http://github.com/jpschewe/fll-sw/issues/issue/322
Make sure that no shows are the lowest scores

This also ensures that a team that has it's score changed to a no show
has that reflected in the computed total.
Make sure that no show scores are entered as NULL computed scores

This ensures that teams that are no shows all day don't show up in the
playoff brackets.

Fixes #322.
Sample database for testing no shows in byes

This is the start of the sample databases for task #306. 

task #322: Make No Shows be bye's in the playoffs 
http://github.com/jpschewe/fll-sw/issues/issue/322
Update changes

task #322: Make No Shows be bye's in the playoffs 
http://github.com/jpschewe/fll-sw/issues/issue/322
Merge branch 'task_322-Make_No_Shows_be_byes'
update changes for release 9.3