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/toolbarSectionButton/toolbarSectionButton.html

@@ -0,0 +1,22 @@
+<template name="toolbarSectionButton">
+    {{#if this.buttonTemplateName}}
+        {{>UI.dynamic template=this.buttonTemplateName data=this}}
+    {{else}}
+        <div id="{{this.id}}"
+            class="toolbarSectionButton rp-x-1 {{this.classes}} {{activeClass}} {{#if this.disabled}}disabled{{/if}} {{#if this.disableFunction}}{{#if (disableButton)}}disabled{{/if}}{{/if}}"
+            title="{{this.title}}">
+            <div class="svgContainer">
+                {{#if this.svgLink}}
+                <svg>
+                    <use xlink:href={{this.svgLink}}></use>
+                </svg>
+                {{else}}
+                <i class={{iconClasses}}></i>
+                {{/if}}
+            </div>
+            <div class="buttonLabel">
+                {{this.title}}
+            </div>
+        </div>
+    {{/if}}
+</template>