#1696 Python3: EscapeParams iso-8859-1 Fix

[Al von Ruff]

In library.py, EscapeParams() uses urllib.quote() to escape the input parameters for URL printing. urllib.quote(), however, is deprecated under Python3, with the expectation that urllib.parse.quote() is used instead.

Problem: unless specified, urllib.parse.quote() defaults to UTF-8. This makes 'Show All Titles' in the navbar use UTF-8 instead of iso-8859-1. So EscapeParams() is changed so:

                    param0 = param[0].encode("iso-8859-1")
                    param1 = param[1].encode("iso-8859-1")
                    param_string += '&%s=%s' % (urllib.parse.quote(param0), urllib.parse.quote(param1))