Bug fix to correct too many duplicate matches

This update addresses the issue of when the app appears to be hung.  If the app cannot find a unique solution within 6 seconds, it will relax the conditions.

Updated the algorithm to reduce groupings.

Corrected issues when using in Dark Mode.
Minor bug fixes.

Updated main view to make teams more clear.

Cosmetic change to indicate which partners are on the same team more clearly.

Due to high demand, PB Play will generate games indefinitely!
When all possible unique combinations have been exhausted for each player, new games will continue to be generated.
Spare order will be maintained.
Duplicate combinations will be minimized as much as possible.

Added instructions.
Minor bug fixes.