Fix discrete pricing logic and rounding. Refactor
Do not add up line quantities
Handle discrete pricing scheme properly
optimize presentation
add indexes on quantity and min_order
fix columns
remove old app (this commit BREAKS things)
disable old custom catalogue app
nuke old gap files
cleanup old admin stuff
catalogue was specified twice
quote saving and loading

Catalogue app was overriden(views) to inject quote loading form into
context.
display quantity(session) in both radio select and text input