Improve removeItemCargo function to retain added items properly

[jonpas]

When merged this pull request will:

• Fully finish Improve removeXCargo functions to retain readded items properly #596 (this function was missed - apparently uniforms and vests are "items")
• Improve CBA_fnc_removeItemCargo - now retains all contents of (other) containers in container
• Add test for above

[jonpas]

execVM "\x\cba\addons\common\test_inventory.sqf";

20:44:09 [CBA] (common) Test OK: (CBA_fnc_addWeapon is defined) x\cba\addons\common\test_inventory.sqf:13
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:16
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:19
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:22
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:30
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:33
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:36
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:39
20:44:09 [CBA] (common) Test OK: (CBA_fnc_addMagazine is defined) x\cba\addons\common\test_inventory.sqf:46
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:49
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:52
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:55
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:63
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:66
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:69
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:74
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:89
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:93
20:44:09 [CBA] (common) Test OK: (count (backpackCargo _container) == 2) x\cba\addons\common\test_inventory.sqf:94
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:102
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:106
20:44:09 [CBA] (common) Test OK: (count (itemCargo _container) == 2) x\cba\addons\common\test_inventory.sqf:107
20:44:09 [CBA] (common) Test OK: (count (itemCargo _container) == 1 && count (itemCargo (((everyContainer _container) select 0) select 1)) == 5) x\cba\addons\common\test_inventory.sqf:116
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:124
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:128
20:44:09 [CBA] (common) Test OK: (count (magazineCargo _container) == 2) x\cba\addons\common\test_inventory.sqf:129
20:44:09 [CBA] (common) Test OK: (not (_result)) x\cba\addons\common\test_inventory.sqf:137
20:44:09 [CBA] (common) Test OK: (_result) x\cba\addons\common\test_inventory.sqf:141
20:44:09 [CBA] (common) Test OK: (count (weaponCargo _container) == 2) x\cba\addons\common\test_inventory.sqf:142

Line 116 (the longest one above) is the new test.