Issue 8 remove database configuration

Continuing the merge with bob.bio.base

bob.bio.base!37 (merged)

See merge request !14 (merged)

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

 #!/usr/bin/env python
 
-from bob.bio.db import ARFaceBioDatabase
+from bob.bio.face.database import ARFaceBioDatabase
 
 arface_directory = "[YOUR_ARFACE_DIRECTORY]"