Update 0.5

Added an engineer and an M15 mine for the PMC side;
Added improvised explosive devices for the insurgent side;
Rebels can now build brick shelters;
Now fortifications can only be built next to the engineer;
An engineer repairs equipment that stands next to him, demines explosive devices;
Added and changed some sound effects;
Increased suicide bomber blast wave;
Oil must now be conquered;
The date farm and food warehouse were carved out;
Minor bugs fixed.