added remote loader for mmCIF

modules/gui/pymod/scene/loaders.xml

 <!DOCTYPE EMDataInfo>
 <EMDataInfo>
  <GenericLoaders>
+  <GenericLoader ExtName="cif" Name="pdb.org (mmCIF)" 
+   Url="http://www.pdb.org/pdb/files/${ID}.cif.gz" Default="1" 
+   FileType="cif.gz"/>
   <GenericLoader ExtName="pdbredo" Name="pdbredo" Url="http://www.cmbi.ru.nl/pdb_redo/ak/${ID}/${ID}_besttls.pdb" />
-  <GenericLoader ExtName="" Name="pdb.org" Url="http://www.pdb.org/pdb/files/${ID}.pdb" Default="1" />
+  <GenericLoader ExtName="" Name="pdb.org" Url="http://www.pdb.org/pdb/files/${ID}.pdb.gz"/>
   <GenericLoader ExtName="emdb" Name="emdb" Url="ftp://emdb.rutgers.edu/structures/EMD-${ID}/map/emd_${ID}.map.gz" FileType="map.gz" Img="1"/>  
  </GenericLoaders>
 </EMDataInfo>