Add "New Skill" to the difficulty menu
Change the max value of g_spSkill
Add "New Skill" to the "Add bots" menu
Change the max value of g_spSkill @cg_scoreboard.c
Merge branch 'new_skill' into test-4

* new_skill:
  Change the max value of g_spSkill @cg_scoreboard.c
  Add "New Skill" to the "Add bots" menu
  Change the max value of g_spSkill
  Add "New Skill" to the difficulty menu