Load UI components before document ready event
Show loading spinner when simulation is loaded from url
Merge pull request #141 from mlolson/module-loading-order

Load UI components before document ready event
Merge pull request #145 from mlolson/sim-url

Show loading spinner when simulation is loaded from url
Fix getChildren() for subtrees when array is present. Adds short label
to plots, hovering over it shows full instancepath of variable
Add mixin to create and clean up event listeners when component is unmounted

Listen to an event using the listenTo function.
The listener is cleaned up when the component is unmounted
Make sure loading spinner is mounted before trying to set props