Integrate the new bob.extension loading config mechanism

See merge request !119

# Conflicts:
#   bob/bio/base/tools/command_line.py

Removed global variable results

Using config file loading mechanism from bob.extension

Used the bob.extension config file loading

Removing an awesome feature implemented in 2 lines of code

Integrated with bob.extension merge 58

[sphinx] Added some documentation about chain loading

Fixed import

Enabled the assignment of the variable env via config files

See merge request !120

Revert "replace the original_directory path in the low-level db too"

See merge request !101

Do not use **kwargs for pretty printing in databases

See merge request !118

Improves verbosity for preprocessing, extraction and enrollment; Adds more…

Closes #98

See merge request !117

Improves verbosity for preprocessing, extraction and enrollment; Adds more verbosity for scoring (closes #98)

Allow for comment lines in file-lists

See merge request !116

Stacks of extractors: Fix when no extractor requires training

See merge request !115

Test filelist databases when no zt files exist

See merge request !114

Removed global variable results

See merge request !113

SequentialExtractor: Apply extractor on training data always when apply=True

See merge request !112

Deleting partially concatenated score file when failing.

See merge request !107

Add configuration file for Hamming distance algorithm

See merge request !110

Fix manifest file to avoid packaging warnings

See merge request !109

Fixed issue with --directory flag in evaluate.py

See merge request !108

Collect RR and DIR results using collect_results.py

See merge request !106

Add sequential and parallel processors, pre-processors, and extractors

Closes #95

See merge request !102