Reduces visibility of internal fields/methods

Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.

Reduces the visibility of internal methods to private/protected/default when possible.

src/main/java/appeng/block/solids/OreQuartz.java

@@ -150,12 +150,12 @@ public class OreQuartz extends AEBaseBlock
 		}
 	}
 
-	public void setBoostBrightnessLow( final int boostBrightnessLow )
+	void setBoostBrightnessLow( final int boostBrightnessLow )
 	{
 		this.boostBrightnessLow = boostBrightnessLow;
 	}
 
-	public void setBoostBrightnessHigh( final int boostBrightnessHigh )
+	void setBoostBrightnessHigh( final int boostBrightnessHigh )
 	{
 		this.boostBrightnessHigh = boostBrightnessHigh;
 	}