replace relation icon pngs with svgs.
Merge pull request #111 from garyposter/rel_svg

Trivial change: replace pngs with svgs.  As a flyby, I also removed the old lbox cruft.

To qa, go to `http://localhost:8888/:flags:/relationCollections/` , add two services, relate them, and verify that you see the new green svg icon on the relation line.
When the user drops a local charm archive on the canvas, open
a basic inspector requesting the series they would like to
deploy this charm to.
Merge pull request #112 from hatched/select-series

__To QA__
- Drag a charm archive to the canvas
- It should pop up a basic inspector asking you for the series name you would like to deploy to

__Notes__
The inspector is very ugly and is intended to have new markup and styling done in a follow-up