Add measurement table functions (#415)

* fix(measurements): Add measurement table functions
- Support for labeling measurements and adding measurement description
- Jump to measurement when clicked on measurement table

* fix(layout): Fix the issues with layout when switched with different plugins

* fix(measurements): Support for deleting measurements in measurement table

* fix(measurements): Add context menu for measurements

* fix(dependencies): Bump ohif-core to 0.4.2

src/connectedComponents/ToolContextMenu.css

@@ -0,0 +1,34 @@
+.ToolContextMenu {
+  position: absolute;
+  background-color: white;
+  border: 1px solid white;
+  border-radius: 5px;
+  z-index: 1000;
+  display: block;
+  width: 170px;
+}
+
+.ToolContextMenu > ul {
+  list-style-type: none;
+  padding-left: 0;
+  margin: 0;
+}
+
+.ToolContextMenu > ul > li > button {
+  padding: 10px;
+  font-size: 14px;
+  border: none;
+  color: #516873;
+  border-radius: 3px;
+  outline: none;
+  cursor: pointer;
+  background: none;
+}
+
+.ToolContextMenu > ul > li > button:hover {
+  color: #16202b;
+}
+
+.ToolContextMenu > ul > li > button:active {
+  color: #79f9fe;
+}