Started adding the fit package
More updates to regression docs
Add loads more functions/classes to TOC
FitMultilevel docs
Updating documentation

Desperately trying to reduce the number of errors.
Shed load more doc string fixes
Minor doc fixes
Merge remote-tracking branch 'upstream/master' into doc_toc

Conflicts:
	docs/xref_map.py
	menpo/fitmultilevel/clm/base.py
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
Lots more doc updates from @nontas merge
Merge pull request #370 from patricksnape/doc_toc

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