Use subviews of a single view for fluxes

[Yurlungur]

Same as PR #494

PR Summary

PR Checklist

• Code passes cpplint
• New features are documented.
• Adds a test for any bugs fixed. Adds tests for new features.
• Code is formatted
• Changes are summarized in CHANGELOG.md
• (@lanl.gov employees) Update copyright on changed files

[pgrete]

Is it possible that this PR is half a mixture of the original coarse buffer plus fluxes with coarse buffers being pulled out again (but not all names and comments updated yet?

[Yurlungur]

Thanks for the catch, @pgrete fixed.

[pgrete]

Feel free to disregard the nitpicking/style comments. Only the allocation itself should likely be done within the Metadata conditional.

[JoshuaSBrown]

I don't see any problems with this pr. Thanks @Yurlungur.

[Yurlungur]

Thanks for your comments, @pgrete. I believe all issues should be resolved now.

[pgrete]

Perfect!