Added compression factory to GUI
Removed _algorithm from compression and diff
Changed CompressionAlgorithm and DiffAlgorithm names
Removed few more algorithms
Removed alg from Compression class
Style fix
Removed test with defaults
Merge pull request #30 from zpp-2014-15/compression_fix

Compression fix
Merge branch 'master' into test_data_processor

Conflicts:
	deltacompression/backend/file_processor.py
	deltacompression/backend/file_processor_test.py
	deltacompression/gui/models/experiment.py
	deltacompression/gui/models/experiment_test.py