Merge pull request #207 from Ultimaker/sub-navigation

STAR-620 add sub navigation

Author: Alan Woosnam

package.json

@@ -111,8 +111,8 @@
         "coverageThreshold": {
             "global": {
                 "statements": 93,
-                "branches": 89,
-                "functions": 93,
+                "branches": 88,
+                "functions": 91,
                 "lines": 93
             }
         },