Application module

This is an extension of a column module but it's specifically for application processing time.

Includes a new target view that calculates a percentage of met applications against the target.

https://www.pivotaltracker.com/n/projects/911872/stories/77974996

It could be nicer but we're waiting on the data being flatter from backdrop.
Seeing as we're not applying a hover, maybe this should be called `.summary-number` or similar. Obvs this is just boilerplate hangover