Work on refactoring measurements out of Lesion Tracker package

- Removed AssociatedStudies Collection
- Measurement API is generated from configuration files
- Data exchange methods are defined in configuration

Packages/ohif-user-management/client/components/timeoutCountdownDialog/timeoutCountdownDialog.html

@@ -0,0 +1,10 @@
+<template name="timeoutCountdownDialog">
+    <div id="timeoutCountdownDialog">
+        <div class="dialogHeader">
+            <h5>Your session is about to expire.</h5>
+        </div>
+        <div class="dialogContent">
+            <p>You will be logged out in {{timeLeft}}.</p>
+        </div>
+    </div>
+</template>