Upgrades to csfluxes.m
Upgrades to csfluxes.m

1. Choose eddy.mx as origin for west-east division for all locations
except shelfbreak. I might revisit this later.

2. Remove crazy interpolation code since I only use his files now.

3. Save location dependent west-east masks so I know what I've used
for each location later.

4. Added initialization of westmask, eastmask, slopext and eddyxt.

dcherian/eddyshelf,dcherian/eddyshelf,dcherian/eddyshelf