* Update helpcontent2 from branch 'master'
  - More CSS tweaks…
    
    • Ever-so-slightly brightened link color
    • Made most tables centered; I think they look much better
    • Removed some pointless spacing
    • Made all dropdown options consistently align to the left
    • Finally found out why pagination had extra 40px to its left
      and it’s a shame the normalizer doesn’t account for it
    • Correctly made disabled pagination links unsensitive
    • Gave styling to the search bar for consistent appearance
      in Gecko- and Blink-based browsers
    
    Change-Id: Idcb488160aa97ec0c4adb5202aed7f194dfac7c9