Fire destroy-inspector event when a zip is dropped on the canvas fixes #1278559
Merge pull request #121 from hatched/inspector-covered-1278559

__To QA__
Deploy a charm and open the service inspector.
Drop a .zip onto the canvas and the old inspector should close and the series-select inspector should open.
Fixed bug #1278663 tab text overflowing in Safari.
Fixed bug #1276861 tab scroll height not adjusting in Safari.
Fixed bug #1276844 tabview animating into place on page load in Safari.