De-cluttered AssignGear Item-Additions

The block for adding clothes and items was unnecessarily cluttered/hard to read.
It should now be clearer what is removed when and what is added when.

Changes assignGear execution as follows:
1. Remove backpack, ALL weapons, ALL items, ALL magazines.
2. Remove ALL clothing.
3. ADD clothing as assigned per assignGear.
4. ADD universal items (nvg, map etc.)
5. ADD backpack and weapons etc as usual.