Improved exceptions

Many exceptions got an improvement due to changed class or description or details it is providing.
Is not complete, needs to be done in patches in the regions, where it is needed, since some are just
swallowed.

Removed total usage of pure RuntimeExceptions to 0.

src/api/java/appeng/api/config/Settings.java

@@ -25,6 +25,7 @@ package appeng.api.config;
 
 
 import java.util.EnumSet;
+import javax.annotation.Nonnull;
 
 
 public enum Settings
@@ -55,16 +56,19 @@ public enum Settings
 
 	STORAGE_FILTER( EnumSet.allOf( StorageFilter.class ) ), PLACE_BLOCK( EnumSet.of( YesNo.YES, YesNo.NO ) );
 
-	private final EnumSet values;
+	private final EnumSet<? extends Enum<?>> values;
 
-	Settings( EnumSet set )
+	Settings( @Nonnull EnumSet<? extends Enum<?>> possibleOptions )
 	{
-		if( set == null || set.isEmpty() )
-			throw new RuntimeException( "Invalid configuration." );
-		this.values = set;
+		if ( possibleOptions.isEmpty() )
+		{
+			throw new IllegalArgumentException( "Tried to instantiate an empty setting." );
+		}
+
+		this.values = possibleOptions;
 	}
 
-	public EnumSet getPossibleValues()
+	public EnumSet<? extends Enum<?>> getPossibleValues()
 	{
 		return this.values;
 	}