GPII-194: Fixed these issues: 1) hovering over preference set text labels does not apply hover effect on associated icon; 2) when hovering over "try something new", the animation plays on all preference icons except "more text".
GPII-196, GPII-200:
- "More text" now says "Extra Words"
- panel labels are all now lower case
- "Try something…" now uses a hand pointer and the arrow is smaller
- checkmark transition sped up
- selected preferences now appear colour inverted when in contrast modes.
- added RobotoSlab font.
Merge remote-tracking branch 'upstream/master' into GPII-196
Merge remote-tracking branch 'cindyli/GPII-194' into GPII-196
GPII-194: Fixed a bug where the drop shadow doesn't appear when hovering over the label.
Merge branch 'master' into GPII-194
Merge remote-tracking branch 'cindy/GPII-194'

* cindy/GPII-194:
  GPII-194: Fixed a bug where the drop shadow doesn't appear when hovering over the label.
  GPII-194: Fixed these issues: 1) hovering over preference set text labels does not apply hover effect on associated icon; 2) when hovering over "try something new", the animation plays on all preference icons except "more text".
Merge branch 'master' into gpii-196
GPII-196: Drop shadow no longer appears when hovering over the text label.
GPII-196: Fixed arrow size on Try Something New.
Merge remote-tracking branch 'jon/gpii-196'

* jon/gpii-196:
  GPII-196: Fixed arrow size on Try Something New.
  GPII-196: Drop shadow no longer appears when hovering over the text label.
  GPII-196, GPII-200: - "More text" now says "Extra Words" - panel labels are all now lower case - "Try something…" now uses a hand pointer and the arrow is smaller - checkmark transition sped up - selected preferences now appear colour inverted when in contrast modes. - added RobotoSlab font.
GPII-207:
- Search and prev/next inputs now appear inverted. - Low contrast links are no longer bold.
- Blur on drop shadows are gone in contrast modes.
- Low contrast now uses RobotoSlab-regular for the content area.
GPII-207: Removed the drop shadow from the header.
Merge remote-tracking branch 'jon/GPII-207'

* jon/GPII-207:
  GPII-207: Removed the drop shadow from the header.
  GPII-207: - Search and prev/next inputs now appear inverted. - Low contrast links are no longer bold. - Blur on drop shadows are gone in contrast modes. - Low contrast now uses RobotoSlab-regular for the content area.
Merge branch 'master' into GPII-202