added grid type

renamed few classes

diy-layout-creator --username bancika@gmail.com/DIYLC/src/org/diylc/common/GridType.java

@@ -0,0 +1,6 @@
+package org.diylc.common;
+
+public enum GridType {
+
+	LINES, CROSSHAIR, DOT, NONE;
+}

diy-layout-creator --username bancika@gmail.com/DIYLC/src/org/diylc/common/IPlugInPort.java

@@ -172,6 +172,8 @@ public interface IPlugInPort {
 	 * @param parentMenuName
 	 */
 	void injectSubmenu(String name, Icon icon, String parentMenuName);
+	
+	Double[] getAvailableZoomLevels();
 
 	/**
 	 * Returns current zoom level where <code>zoomLevel = 1.0d</code> means