Update "assign_minor_stats", etc.

Made changes to "assign_minor_stats", "menu_draw_header_callback",
"menu_draw_row_callback", "menu_select_callback",
"menu_get_num_rows_callback", "draw_cell_contents", "strcat_stat_name",
and "init_npc", as well as to some of the constants in "pebble_quest.h".