Port LFW database

Porting LFW database.

I'll:

• use directly the original files.
• Allow to select the type of the annotation (idiap or funneled)
• Port only the view2 protocol (the only one that makes sense today)

bob/bio/face/config/database/gbu_bad.py

 #!/usr/bin/env python
 
 
-from bob.extension import rc
 from bob.bio.face.database import GBUDatabase
 
-
-mbgc_v1_directory = rc["bob.bio.face.gbu.directory"]
-
 database = GBUDatabase(protocol="Bad")