Mutiple calls to define with the same daoName would add duplicate entries into the factory system.

- added test to check factory size
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Merge branch 'master' of github.com:innofluence/sequelize
Initial impl.
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Adds support for URL connection strings, with a test to ensure Sequelize gets instantiated correctly
fixes #494
Merge branch 'fixIssue494' of git://github.com/solotimes/sequelize into solotimes-fixIssue494
dates do not have precision of milliseconds anymore
Merge branch 'dao-duplications' of git://github.com/whentomanage/sequelize into whentomanage-dao-duplications
fixed tests
added equals change
merged #473
Merge branch 'refresh' of git://github.com/innofluence/sequelize into innofluence-refresh
use Model.find to reload a model instance
extracted log in order to be able to use it somewhere else
made addQuotes and removeQuotes parts of the QueryGenerator