Add flights widget

+ Only init form field stuff after dom ready
+ Add 'raised' input style to match current landing pages design
+ Use body-grey people/baby icons
+ Code review updates
+ Further refactoring
+ More code review updates
+ Last bit of code review updates
Add color-theme meta tag
Merge pull request #1085 from lonelyplanet/remy-flights_widget

Add flights widget to Rizzo.