HTMLTOPDF_PATH config value gets escaped

I removed the stripslashes in the update_siteconfig function under administrationController since this is the reason why the HTMLTOPDF_PATH and HTMLTOPDF_PATH_TMP is being escaped.

We can however create an implication in the loop to check if the value is either HTMLTOPDF_PATH or HTMLTOPDF_PATH_TMP but I "think" this is unnecessary since we don't want to add hard-coded in there and the value for the config are being saved under the config.php not in db. So in terms of security the stripslashes function for me is unnecessary. Please quote me on this if I'm wrong.