Added TF_ prefix to all global variables to avoid potential complications with other mods or mission makers.

https://github.com/michail-nikolaev/task-force-arma-3-radio/issues/354
Merge branch 'Variable_Prefix'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Updated debug mission with variable prefix changes.
Merge pull request #357 from CorruptedHeart/master

Added TF_ prefix to all global variables