TOOLS-57 (Improvement - Complete): Change name of 'XnatCommunicator' to 'XnatIo'. \ TOOLS-59 (Improvement - Complete) : Create an XnatGlobals.py file.  Migrate necessary properties. \ TOOLS-58 (Improvement - Complete): Move 'Login' and 'Tools' to CTK Collapsibles. Minimize if login collapsible if login was successful.