Fixes https://github.com/ferstaberinde/F3/issues/412

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.
Merge branch 'master' of https://github.com/Wolfenswan/F3 into dev-gearUniformFix
Merge pull request #419 from Wolfenswan/dev-gearUniformFix

De-cluttered AssignGear Item-Additions