fixes the check_feature_type logic
adds double_igo in featurefunctions.py
defines extract_parametric_features and documents them
fixes regression features in regression/trainer.py
updates regression/base.py
adds doc in regressionfunctions.py
proper check of regression features in sdm/trainer.py
fixes error in checking regression type and features
completes multilevel support for regression_type
fixes bug with get_parameters
removes abstract decorator from get_parameters()
fixes printing
more print improvement
finishes sdm_trainer_test
adds seed in sdm_trainer_test
finishes sdm tests
Merge pull request #367 from nontas/regression_features

Fix SDAAM/SDCLM
Merge branch 'master' into doc_toc

Conflicts:
	menpo/fitmultilevel/featurefunctions.py
	menpo/fitmultilevel/sdm/base.py
	menpo/fitmultilevel/sdm/trainer.py
Missing docs from merge
More fixes to docs for the merge

Some renamed functions etc