Create DDSLoader-1.8.0.0.ckan and EditorExtensions-2.0.ckan

Updated DDSLoader-1.7.0.0.ckan for 1.8.0.0 by hand
Note that the .zip filename is still DDSLoader-1.7.0.0.zip as explained here: http://forum.kerbalspaceprogram.com/threads/96729?p=1602012&viewfull=1#post1602012

Updated EditorExtensions-1.4.ckan for 2.0 by hand