Move some features from bob.measure to bob.bio.base

As we've discussed in the last bob meeting we decided to move some biometric specific features from bob.measure to bob.bio.base

The candidate features are the following (including the plot extension of it):

• bob.measure.cmc
• bob.measure.dir
• bob.measure.epc
• ANYTHING ELSE?

Depends on: bob.measure!103 (closed)

ping @amohammadi @lcolbois @ydayer

Thanks