Create setPan at svg-editor.js to let move the document without pressing any key or mouse button.  Usefull for future tablet/mobile edition

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2331 eee81c28-f429-11dd-99c0-75d572ba1ddd
Change name from svgEditor.setPan to svgEditor.setPanning

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2332 eee81c28-f429-11dd-99c0-75d572ba1ddd
Adding Padding extension for tablet/mobile devices

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2333 eee81c28-f429-11dd-99c0-75d572ba1ddd
Removing comments and updating wrong ones from ext-panning.js

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2334 eee81c28-f429-11dd-99c0-75d572ba1ddd
Updating ext-panning to use svgEditor.setPanning() instead of svgEditor.setPan()

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2335 eee81c28-f429-11dd-99c0-75d572ba1ddd