LUGG-221 : Adding more targeted selectors for sidebar blocks

Summary
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Unordered list dots were appearing in the sidebar blocks for the book module's block. Arrows were disappearing on none-factetapi blocks.

Changes
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- Added list-style: none to all unordered lists within the sidebar
- Changed current sidebar styling to correctly target all blocks

To Test
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1) Pull most recent suitcase commits in a site that uses Suitcase
2) Clear cache
3) Check for no unordered list bullet circles/triangles
4) Check for no triangle on active solr search filter terms