Adding documentation for Aspen Configuration Panel

[sotorrio1]

Fixes/Addresses:

Adding documentation related to recently merged PR #1239

Summary/Motivation:

Changes proposed in this PR:

Legal Acknowledgement

By contributing to this software project, I agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the copyright and license terms described in the LICENSE.md file at the top level of this directory.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 38.75%. Comparing base (0db11e9) to head (8f505da).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1243      +/-   ##
==========================================
- Coverage   38.78%   38.75%   -0.03%     
==========================================
  Files         164      164              
  Lines       37139    37139              
  Branches     6164     6164              
==========================================
- Hits        14403    14392      -11     
- Misses      21597    21611      +14     
+ Partials     1139     1136       -3     

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[ksbeattie]

LGTM