UI Navigation MWL / MPPS / Workitems (UPS) : Show Count button if the web applications have the respective Web Service Classes instead of checking for QIDO_COUNT

[vrindanayak]

Currently, UI checks if selected web application has QIDO_COUNT web service class (implemented in #2325) to show Count button or not.
However, now as we have a separate AE for worklists (which has MWL / MPPS / UPS transfer capabilities), it would be sufficient to consider same check to display Count button which is used to check list of web applications shown in the dropdown.
f.e. for MWL tab, UI checks and displays only those web applications in dropdown which have MWL_RS web service class.
Use this same check to directly display Count button even when one such web application is found.

UI Tab	Web Service Class check for web applications and Count button
MWL	MWL_RS
MPPS	MPPS_RS
Workitems (UPS)	UPS_RS

Related #3860, #3858