Improved scrambling and building of teams in normal mode

1) Scrambling has been improved to enforce switching of 2-4 players
randomly
2) Building teams now consists of formulas to help build a fair team
based on data stored in the database
3) Normal mode now proceeds to pick players like captain mode if there
are 2 captains added in the game. If not, it proceeds normally if the
class requirements are met instead of waiting for 2 captains to add up.