Seperation of data and schema migration. Html whitspace fixes.
	modified:   demo/migrations/0002_auto__add_field_stringpair_levenshtein_ratio.py
	new file:   demo/migrations/0003_update_ratio.py
	modified:   templates/demo/index.html
2 lines between imports and class definition.

	modified:   demo/migrations/0001_initial.py
	modified:   demo/migrations/0002_auto__add_field_stringpair_levenshtein_ratio.py
	modified:   demo/migrations/0003_update_ratio.py
	modified:   demo/models.py
	modified:   demo/tests.py