simplified visElems, and renamed current_drawing -> currentDrawing

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2461 eee81c28-f429-11dd-99c0-75d572ba1ddd
removed unneeded json_encode / json_decode for 3 reasons:
- it's available natively since IE8 and it's provided by Chrome Frame which is a requirement for old IE
- it's only used for postMessage exchange which is a newer API than JSON
- if ever we would need it, it should be added in an external lib, not inside the editor code itself

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2462 eee81c28-f429-11dd-99c0-75d572ba1ddd
switched from properlySourceSizeTextArea() to a full CSS equivalent to optimize DOM repaint

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2463 eee81c28-f429-11dd-99c0-75d572ba1ddd
removed non properly deleted test config introduced in r1467

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2464 eee81c28-f429-11dd-99c0-75d572ba1ddd
improved loosed type coercion for reorient tool

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2465 eee81c28-f429-11dd-99c0-75d572ba1ddd
added missing radix and misc formatting

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2466 eee81c28-f429-11dd-99c0-75d572ba1ddd
cleaned up populateLayers()

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2467 eee81c28-f429-11dd-99c0-75d572ba1ddd