public / sequelize

Conflicts:
	lib/dao.js
	lib/dialects/postgres/connector-manager.js
	lib/query-interface.js
	test/sequelize.test.js

Default dialect in sequelize generatec config

Make the logic for manipulating sqlite data types a bit more solid

The config.json generated by sequelize -i does not supply a dialect
key/value pair when generating. It defaults to mysql so lets make this
clear by adding it to the config file

Adds an additional check for enum value before converting it toLowerCase

Basically fixes an issue introduced with commit 2d298a3c that causes conversion of undefined toLowerCase

TypeError: Cannot call method 'toLowerCase' of undefined
    at null.<anonymous> (/path/to/project/modules/elms/node_modules/sequelize/lib/dao.js:139:127)
    at EventEmitter.emit (events.js:95:17)
    at null.<anonymous> (/path/to/project/modules/elms/node_modules/sequelize/lib/dao-validator.js:45:17)
    at Hooks.runHooks (/path/to/project/modules/elms/node_modules/sequelize/lib/hooks.js:19:15)
    at null.<anonymous> (/path/to/project/modules/elms/node_modules/sequelize/lib/dao-validator.js:39:29)
    at Hooks.runHooks (/path/to/project/modules/elms/node_modules/sequelize/lib/hooks.js:19:15)
    at null.fct (/path/to/project/modules/elms/node_modules/sequelize/lib/dao-validator.js:26:27)
    at null.<anonymous> (/path/to/project/modules/elms/node_modules/sequelize/lib/emitters/custom-event-emitter.js:25:18)
    at processImmediate [as _immediateCallback] (timers.js:330:15)