fixes 10526: Remove custom background on responsive tables and set it in the docs where it should've been originally

BS3 commits: fff5e540f5fb29ea3c2de713c0d6b10642c90e75
Match order of vars to order of components; darken some alert borders. fixes 10526: Remove custom background on responsive tables and set it in the docs where it should've been originally

BS3 commits: afb6cf1d01c28bd0a1c6803f727eb7408b70c16e,
fff5e540f5fb29ea3c2de713c0d6b10642c90e75