fixed bug with text positioning for groups
remove old editor gpml->json converter code from viewer code
remove old hierarchy (node/edge) for gpml to json conversion
continuing updates to reflect flatter gpml to json conversion
trying out object literal pattern to enable multi-instance
multi-instance starting to work
refactored group gpml->json conversion code so it now works with multi-instance
add back in the code for removing empty groups
publication xrefs (citations) are now displaying nicely