Changed sql conditions when searching for potential url collisions to look for object with a url_attribute starting with base_url, rather than exact matching.
Changed sql conditions when searching for potential url collisions to
look for object with a url_attribute starting with base_url, rather than
exact matching.

scarver2/stringex,humancopy/stringex,masukomi/mobtvse,masukomi/mobtvse,rp-pedraza/stringex,norman/unidecoder,masukomi/mobtvse,rsl/stringex