RAD-181 Improve radiology order lists
* rename RadiologyDashboardTab.jsp to radiologyDashboardTab.jsp
* improve tests of RadiologyDashboardTabController
* rename ordersTable() to getRadiologyOrdersForPatient() in RadiologyDashboardTabController
* rename model and view object from orderList to radiologyOrders
* rename matchedOrders to radiologyOrdersTable
* rename orderList.js to radiologyOrderList.js
* remove voidReasonPopup
* radiologyOrderList.js is not needed in RadiologyDashboardTab