added cases for ChemSpider, PubChem-Compound, Chebi.  changed regex to work with any gpml with the WPID in the name. 
added cases for ChemSpider, PubChem-Compound, Chebi. 
changed regex to work with any gpml with the WPID in the name. 
markwoon/pathvisio,markwoon/pathvisio,PathVisio/pathvisio,PathVisio/pathvisio,markwoon/pathvisio,markwoon/pathvisio,PathVisio/pathvisio,PathVisio/pathvisio