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-study-list/client/components/tabTitle/tabTitle.html

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+<template name="tabTitle">
+    <li role="presentation" class="tabTitle">
+        <a data-target="#{{contentid}}" role="tab" data-toggle="tab">
+            {{title}}
+            <button class="close">&times;</button>
+        </a>
+    </li>
+</template>

Packages/ohif-study-list/client/components/tabTitle/tabTitle.js

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+Template.tabTitle.events({
+    /**
+     * Closes a tab when the close button is pressed in the title
+     * The next tab to the left is loaded if the current tab is closed
+     *
+     * @param e The click event used to close the tab
+     */
+    'click .close': function(e) {
+        console.log('click .close');
+        
+        // Identify the tab title DOM node
+        var tab = $(e.currentTarget).parents('a[data-toggle="tab"]').eq(0);
+
+        // Get the relevent contentId that this tab title represents
+        // Replace any hash marks (#) that were required by Bootstrap's tab switching
+        var contentId = tab.data('target').replace('#', '');
+    
+        // Check if we are closing the active tab. If we are, prepare to switch
+        // to the next tab to the left.    
+        var activeContentId = Session.get('activeContentId');
+        if (activeContentId === contentId) {
+            // Find the index of the tab that is being closed
+            var tabIndex = tab.parent('li').index();
+
+            // Find the index the tab to its left
+            var newActiveTabIndex = Math.max(tabIndex - 1, 0);
+
+            // Find the DOM node of the tab that will be activated
+            var newActiveTab = $('.tabTitle').eq(newActiveTabIndex);
+
+            // Find the content ID of the tab that will be switched to
+            var newActiveTabLink = newActiveTab.find('a[data-toggle=tab]');
+            var newContentId = newActiveTabLink.data('target').replace('#', '');
+
+            // Switch to this tab
+            switchToTab(newContentId);   
+        }
+
+        // Remove any stored data related to this tab from the global ViewerData structure
+        delete ViewerData[contentId];
+    }
+});

Packages/ohif-study-list/client/components/tabTitle/tabTitle.styl

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+.tabTitle
+  button.close    
+    // Prevent blue glow around button in Chrome
+    outline: none