FLOE-174: Marged styling and markup changes. Fixed layout so that URL input is now 2 lines on the toolbar and doesn't jump around as much. Updated the instruction text to be more descriptive and more distinct.
FLOE-174: Added some instruction text to the Preview page. Now gives a description of what to expect and what the user can do in case of an error.
FLOE-174: Replaced <b> with <strong>. Added OpenSans bold.
FLOE-174: Fixed mis-referenced font.
Merge remote-tracking branch 'jhung/FLOE-174'

* jhung/FLOE-174:
  FLOE-174: Fixed mis-referenced font.
  FLOE-174: Replaced <b> with <strong>. Added OpenSans bold.
  FLOE-174: Added some instruction text to the Preview page. Now gives a description of what to expect and what the user can do in case of an error.
  FLOE-174: Marged styling and markup changes. Fixed layout so that URL input is now 2 lines on the toolbar and doesn't jump around as much. Updated the instruction text to be more descriptive and more distinct.