* upgrade typeorm to 3.0
* use new datasource object in typeorm 3
* fix tests
* fix tests
* migrate before creating connection
* fail the test if migration failed
* fix a bug of using article as table name in the reminders query
* fix test
* increase timeout value
* increase timeout value to 50000
* add import mocha
* add import mocha for label test
* add import mocha for every test
* fix test in deleting labels
* add timeout for each label test
* one more test
* fix reminders router by allowing sendrid template id to be null
* do not retry if reminders not found