Omit key once

Keys that can be omited:
 * gk_everyone_hear          = 29
 * gk_infantry_hear          = 30
 * gk_archers_hear           = 31
 * gk_cavalry_hear           = 32
 * gk_group0_hear = gk_infantry_hear
 * gk_group1_hear = gk_archers_hear
 * gk_group2_hear = gk_cavalry_hear
 * gk_group3_hear            = 33
 * gk_group4_hear            = 34
 * gk_group5_hear            = 35
 * gk_group6_hear            = 36
 * gk_group7_hear            = 37
 * gk_group8_hear            = 38
 * gk_reverse_order_group    = 39
 * gk_everyone_around_hear   = 40


 * gk_action                 = 4 (mount, dismount fail, picking weapon from the ground works)
 * gk_kick                   = 8  
 * gk_toggle_weapon_mode     = 9  
 * gk_sheath_weapon          = 17 
 * gk_cam_toggle             = 21 
 * gk_crouch                 = 49  (need to set can_crouch = 1 in module.ini)


 * key_mouse_scroll_up    = 0xee = 238
 * key_mouse_scroll_down  = 0xef = 239
 * key_space              = 0x39 = 57


 * key_pad or key_xbox from 0xF0 to 0xFF - possible works all.


 * You can bypass F1-F8 menu by (close_order_menu), = 1789