EB-5975: Updated CSS on Bill-to and Account Modals.
eb-4834: added encryption for oci urls

id and pwd parameters have been removed. these values are now combined into a single encrypted parameter named 'data'
eb-6915: code cleanup, simplified getPunchoutCxmlSessionList api call to not use <ComplexQuery> since not needed
eb-4834: created utility to encrypt OCI userId and password
eb-4834: refactored XPEDXOciServlet to redirect to new action PunchoutOciLoginAction, since XPEDXPunchoutCustomerLoginAction is deprecated

created a new helper class to encapsulate the convention of data = encrypted(user + pass) and refactored existing code to use it