#53 Fix + tests for JSObjectProxy + a little more

Originally at 2011-09-17T13:25:42Z by Laurent Laffont closed at 2011-09-20T13:31:04Z (pull request) - fix: document location hash raised dnu if hash empty (and more generally when an attribute returns an empty string) - test provided - fix: (and be careful) revert your latest change on String>>asJavaScriptSelector as #yourself did not work anymore - test provided - a few more methods + tests on String and Number - ignore .svn folders and I don't know why pull request select all these commits as we have merged not so long ago .....