add eval test, fixing the prox_tv2d test
Revert "add eval test, fixing the prox_tv2d test"

This reverts commit 68e7975d6d55dfa0b0f54e15fff733d51aa56891.
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fixing error
fixing prox2d test
Merge branch 'fig_prox' into demo_dr
adding prox for all dim, addding test prox with 2d, 3d, 4d matrices
display only one figure, relative path added for the signals
changed maxit
Nicer tests, PEP8 and verbosity support in norm_tv's prox
Merge branch 'fig_prox' into demo_dr
some fixes
fixed tests and added a TODO