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/gridLayout/gridLayout.styl

@@ -0,0 +1,7 @@
+@import "{design}/app.styl"
+
+#imageViewerViewports
+  height: 100%
+  padding-bottom: 1px
+  padding-right: 6px
+  width: 100%