Fix some instances of embedded helioviewer #537
Merged
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Summary
For #536
This fixes the "embed" portion of Helioviewer being embedded in pages. The minimal view is still having issues being embedded.
Helioviewer was failing to load because it attempted to access the localStorage object on the window, which was denied.
Helioviewer was already design to work without localStorage support, but it failed to catch this instance of it not being accessible.
There were also issues positioning the earth scale since some HTML elements that it used as a reference don't exist.
Testing
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