Bodies fix:

> make light and medium bodies better

1) Increase thermal armor for tank bodies (10%)
* more % inceased for light and medium bodies
2) Decreased build power and build time for light and medium bodies (15%)
* more percent decreased for green and black bodies
** slightly increased build points for heavy bodies (10%)
3) Price for yellow bodies now equal to price of grey bodies
4) Increased engine power for light bodies (30%)
5) added double-turret versions of all heavy bodies
* price of tanks with double turrets setted to 2.5 times price of single-turret version of that bodies
6) Improved Vengeance body (HP 300 -> 330)

 Changed item: Viper [Body1REC]
	-Field Name: 'Build Power'	old value:30	new value: 24
	-Field Name: 'Build Points'	old value:150	new value: 130
	-Field Name: 'Engine power'	old value:5000	new value: 7500
	-Field Name: 'Thermal Armor'	old value:4	new value: 6
 Changed item: Bug [Body4ABT]
	-Field Name: 'Build Power'	old value:25	new value: 24
	-Field Name: 'Build Points'	old value:100	new value: 110
	-Field Name: 'Engine power'	old value:5000	new value: 7500
	-Field Name: 'Thermal Armor'	old value:8	new value: 10
 Changed item: Leopard [Body2SUP]
	-Field Name: 'Build Power'	old value:41	new value: 32
	-Field Name: 'Build Points'	old value:220	new value: 175
	-Field Name: 'Engine power'	old value:4000	new value: 6000
	-Field Name: 'Thermal Armor'	old value:6	new value: 8
 Changed item: Retaliation [Body3MBT]
	-Field Name: 'Build Power'	old value:68	new value: 44
	-Field Name: 'Build Points'	old value:400	new value: 250
	-Field Name: 'Engine power'	old value:5000	new value: 8500
	-Field Name: 'Thermal Armor'	old value:15	new value: 18
	-Field Name: 'HP'	old value:100	new value: 130
 Changed item: Cobra [Body5REC]
	-Field Name: 'Build Power'	old value:46	new value: 38
	-Field Name: 'Build Points'	old value:250	new value: 220
	-Field Name: 'Thermal Armor'	old value:6	new value: 8
 Changed item: Scorpion [Body8MBT]
	-Field Name: 'Build Power'	old value:39	new value: 38
	-Field Name: 'Build Points'	old value:250	new value: 220
	-Field Name: 'Thermal Armor'	old value:12	new value: 14
 Changed item: Panther [Body6SUPP]
	-Field Name: 'Build Power'	old value:57	new value: 46
	-Field Name: 'Build Points'	old value:300	new value: 260
	-Field Name: 'Thermal Armor'	old value:9	new value: 11
 Changed item: Retribution [Body7ABT]
	-Field Name: 'Build Power'	old value:100	new value: 80
	-Field Name: 'Build Points'	old value:600	new value: 360
	-Field Name: 'Thermal Armor'	old value:20	new value: 22
 Changed item: Python [Body11ABT]
	-Field Name: 'Build Power'	old value:60	new value: 64
	-Field Name: 'Thermal Armor'	old value:9	new value: 10
	-Field Name: 'Build Points'	old value:350	new value: 385
 Changed item: Mantis [Body12SUP]
	-Field Name: 'Build Power'	old value:52	new value: 64
	-Field Name: 'Thermal Armor'	old value:18	new value: 20
	-Field Name: 'Build Points'	old value:350	new value: 385
 Changed item: Tiger [Body9REC]
 	-Field Name: 'Build Points'	old value:420	new value: 460
	-Field Name: 'Thermal Armor'	old value:15	new value: 16
 Changed item: Vengeance [Body10MBT]
	-Field Name: 'Build Points'	old value:800	new value: 520
	-Field Name: 'HP'	old value:300	new value: 330
 Changed item: Dragon [Body14SUP]
	-Field Name: 'Thermal Armor'	old value:30	new value: 36
 Changed item: Wyvern [Body13SUP]
	-Field Name: 'Thermal Armor'	old value:28	new value: 34