Make the refine/lot information sticky on scroll

[katarinabatina]

1. Banner background should grow when user has reached top of scroll http://cl.ly/1C3u010n1u0p
2. As the user scrolls down and the banner progresses off the screen, the refine UI and work count become fixed, with the rest of the works scrolling behind. This creates a fixed header with the back/search UI and the partner name being displayed. Have struggled to prototype this in a simple way will attempt in the next day or so but hopefully this is a starting point.

[katarinabatina]

here's a prototype to illustrate:

video: http://cl.ly/1l370G0Y3q3i

One thing that isn't quite right is how the text+content moves independently of the "white background"
don't want that to happen instead that the entirety of the white area moves down as well.

[ashfurrow]

How should the back/search buttons work with this behaviour?

[katarinabatina]

@ashfurrow yes and slight amendment to the banner behavior coming....

[ashfurrow]

Taking into account the work Orta has done, a loose estimate would be...

Estimate: 1 day

[ashfurrow]

Re-assigned @orta based on our discussions yesterday.

[ashfurrow]

Closing based on #1088