Local inspectors properly display in sidebar.
Merge pull request #382 from huwshimi/inspector-heights

Local inspectors properly display in sidebar

Set the correct wrapping elements on the local charm inspectors so they display in the sidebar correctly.

QA:
- drop a zip of a charm onto the canvas
- check that the inspector that appears is the full height of the sidebar with the buttons at the bottom
- click "Upload"
- drop the same zip on the canvas again
- check that the new inspector that appears is the full height of the sidebar with the buttons at the bottom