Issue 525: Always clear the more facet on close.

[kaladay]

Description

Always clear the more facet array list on close. There should be no reason to preserve the list after closing.

Fixes #525

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [x] Manual Testing.
• [x] Unit Tests.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] My changes generate no new warnings
• [x] New and existing unit tests pass locally with my changes

[coveralls]

Coverage: 45.856% (-0.02%) from 45.874% when pulling b30467c87b4d2ac26af47c250485f217d5eb1825 on 525-more_facets-repeating into 5599f29dd5874a38b5b25da6d9df8e18dfb53dc0 on staging.