new: f_fnc_preMount
no message
Reworked preMount function:
Now called by:
[array of vehicles, array of groups,bool,bool] call f_fnc_preMount with the two bool being optional

In editor in can be put into a gamemodule which is synced to empty vehicles and the array of vehicles be replaced with "synchronizedObjects this".
Merge branch 'dev' of https://github.com/Wolfenswan/F3 into dev-preMount
Merge branch 'dev' of https://github.com/ferstaberinde/F3 into dev-premount
Merge pull request #218 from Wolfenswan/dev-preMount

New: F3 PreMount component