a lot of t() are missing

many parts are not translateable

here is a patch which starts to fix this.
If you look at the areas which a changed there are more t()'s missing.
the patch is untested

maybe it would be good to read t() again, because sometimes it is/was used the false way.
for example:

t($str .' has been delted successfully.')

//should be:

t('%name has been deleted successfully.', array('%name' => $str)

$str is not a good name for a variable. Or do you know what it means?
I can just guess that it includes a string but not what for a string?

btw. please read Commit messages--providing history and credit
because your cvs commits dont say anything...

Worked on http://drupal.org/node/56045 , http://drupal.org/node/55783

and if you would write #55783 instead of http://drupal.org/node/55783 then it could be clicked at http://drupal.org/cvs

I want to thank you for this great module!