LT-310: Remove 'Back to viewer' left border in study list

LesionTracker/client/components/app/app.html

@@ -12,7 +12,7 @@
                 </div>
             </a>
             {{ #if studyListToggleText }}
-            <a class="btn studyListLinkSection pull-left js-toggle-studyList">
+            <a class="btn studyListLinkSection pull-left js-toggle-studyList" id="{{dasherize studyListToggleText}}-btn">
                 {{studyListToggleText}}
             </a>
             {{ /if }}

LesionTracker/client/components/app/app.js

@@ -40,6 +40,10 @@ Template.app.helpers({
 
     onStudyList() {
         return (Session.get('activeContentId') === 'studylistTab');
+    },
+
+    dasherize(text) {
+        return text.replace(/ /g, '-').toLowerCase();
     }
 });
 

LesionTracker/client/components/app/app.styl

@@ -37,6 +37,9 @@ $expandedHeight = 160px
     theme('border-left', '%s solid $uiBorderColor' % $uiBorderThickness)
     margin: 3px 0 0 10px
     padding: 0 0 0 10px
+    
+    &#back-to-viewer-btn
+      border-left: 0
 
   .btn
     theme('color', '$textSecondaryColor')