REFAC: Moved parsimony.functions.nesterov.properties.NesterovFunction to parsimony.functions.properties.NesterovFunction.
Merge branch 'master' of github.com:neurospin/pylearn-parsimony
ENH: Added inexact proximal capability. REFAC: Refactored functions.nesterov.L1TV slightly to conform to the API. BUG: Some regularisation constants were not set correctly. Fixed for logistic regression.