Allowing follow-up number to be controlled by configuration

Packages/ohif-measurements/client/lib/getTimepointName.js

@@ -12,6 +12,8 @@ OHIF.measurements.getTimepointName = timepoint => {
     // Check if this is a Baseline timepoint, if it is, return 'Baseline'
     if (timepoint.timepointType === 'baseline') {
         return 'Baseline';
+    } else if (timepoint.visitNumber) {
+        return 'Follow-up ' + timepoint.visitNumber;
     }
 
     // Retrieve all of the relevant follow-up timepoints for this patient