make new classes for lasso_path/enet_path and deprecate old
comments and pep8 changes
remove unneccasary if
misc
API : deprecating fit_intercept and normalize in lasso_path and enet_path
ENH : more cleanup on linear models path refactoring
API : massive refactoring of CV models in coordinate descent. Now the algo core is in path functions
attempt to fix plot_lasso_model_selection
ENH : making finally E-net + Lasso CV with CD work as Lars with path