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-viewerbase/client/components/viewer/displaySetNavigation/displaySetNavigation.html

@@ -0,0 +1,16 @@
+<template name="displaySetNavigation">
+    <div id="{{this.id}}"
+         class="toolbarSectionButton rp-x-1 {{this.classes}} {{#if isNext}}js-next{{else}}js-prev{{/if}} {{#if (disableButton isNext)}}disabled{{/if}}"
+         title="{{this.title}}">
+        <div class="svgContainer">
+            {{#if isNext}}
+                <i class="fa fa-toggle-down fa-fw"></i>
+            {{else}}
+                <i class="fa fa-toggle-up fa-fw"></i>
+            {{/if}}
+        </div>
+        <div class="buttonLabel">
+            {{#if isNext}}Next{{else}}Previous{{/if}}
+        </div>
+    </div>
+</template>

Packages/ohif-viewerbase/client/components/viewer/displaySetNavigation/displaySetNavigation.js

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+import { OHIF } from 'meteor/ohif:core';
+import { Template } from 'meteor/templating';
+
+Template.displaySetNavigation.events({
+    'click .js-next'(event, instance) {
+        if ($(event.currentTarget).hasClass('disabled')) {
+            return;
+        }
+
+        OHIF.viewer.moveDisplaySets(true);
+    },
+
+    'click .js-prev'(event, instance) {
+        if ($(event.currentTarget).hasClass('disabled')) {
+            return;
+        }
+
+        OHIF.viewer.moveDisplaySets(false);
+    }
+});
+
+Template.displaySetNavigation.helpers({
+    disableButton(isNext) {
+        Session.get('LayoutManagerUpdated');
+        return !OHIF.viewer.canMoveDisplaySets(isNext);
+    }
+});