Fixed faction names and misc. comments

Affecting comments only. 

- All instances of Blue, Red and Green were replaced with Nato, CSAT and AAF respectively.
- renamed "ShackTactical Fireteam Member Markers" to "Fireteam Member Markers" to reflect changes made by head. (Should it be F3/Folk ARPS Fireteam Member Markers?)
- init.sqf comments were cleared up
- added commented example to cas cap showing usage of side instead of group
- line for tripwireaction in init.sqf was removed

Note:
Filenames referring to blue, red etc. and references to them inside scripts (assignGear) were NOT changed.