fixed DT stuff

bug in tank drive relating to button 1 on joysticks for slower drive
made inverted DT for tank drive work

Author: lhmcgann

Robot2018/src/org/usfirst/frc/team199/Robot2018/subsystems/Drivetrain.java

@@ -298,10 +298,17 @@ public void arcadeDrive(double speed, double turn) {
 	 */
 	@Override
 	public void tankDrive(double leftSpeed, double rightSpeed) {
-		if (Robot.oi.leftJoy.getRawButton(1) || Robot.oi.rightJoy.getRawButton(1)) {
+		if (Robot.oi.leftJoy.getRawButton(1)) {
 			leftSpeed *= Robot.getConst("Speed Slow Ratio", 0.5);
+		}
+		if (Robot.oi.rightJoy.getRawButton(1)) {
 			rightSpeed *= Robot.getConst("Speed Slow Ratio", 0.5);
 		}
+		if (isInverted) {
+			double leftSpd = leftSpeed;
+			leftSpeed = rightSpeed;
+			rightSpeed = leftSpd;
+		}
 		robotDrive.tankDrive(inverted * leftSpeed, inverted * rightSpeed, Robot.getBool("Square Drive Values", false));
 	}