MySQL: Unique key index column names now quoted


https://github.com/sequelize/sequelize/issues/1753
Now using lodash.map(...)
Unit test added

https://github.com/sequelize/sequelize/pull/1754
Now using correct function parameters
Now using correct function parameters
Merge pull request #1754 from tngraessler/master

MySQL: Unique key index column names now quoted
feat(model/attributes): attribute.field support for includes
fix tests
refactor(model/attributes): model.attributes is no longer a SQL representation of rawAttributes
fix mysql tests
update dottie