Clear tools button is added. Removes all target and nonTarget lesions data on image and deletes from Measurements collection

Packages/lesiontracker/both/removeCollections.js

@@ -0,0 +1,8 @@
+Meteor.methods({
+    "removeMeasurementsByPatientId": function(patientId) {
+        Measurements.remove(
+            {patientId: patientId},
+            {multi: true}
+        );
+    }
+});