CC-2869 Community lens: fix used/examples sidebars
CC-2869 Community lens: fix used/examples sidebars

Oops, the view page's "Used by" and "Examples of use" sidebars weren't
being shown, if there was not also some sort of "Related" sidebar.

Hoist the "Used by" and "Examples of use" sidebars out of their
present nesting, so that each sidebar appears correctly, independent
of whether other sidebars are present.

RVA-226 RVA-228

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