chebfun/chebfun — pull request #877 by nickhale (2014-06-16 16:09:32+00:00)
Title: Remove some duplicated preferences for CHEBFUN2

(which should be extracted from the tech level anyway.)

Also removing the 'scale' pref from ```chebfunpref()``` , which should now be passed as data.

Most of the changes in this commit as simply changing the tolerances for ```chebfun2``` tests, which were using ```pref.cheb2.eps```.