* replacing file-stream-rotator with a better logging mechanism using winston which can be extended later for other use cases and integrations
* refactoring logger mechanism, accomodating for tests and environment variable configurations
* only enabling morgan logger if config.log.format option was defined, and disabling the app.log file transport option for the test environment
* disabling all kind of logging when in test enviroment
Adds the log options, and format to the Morgan middleware in the Express
configuration.
These options are defined in the environment configurations.
The implementation derived from https://github.com/meanjs/mean/pull/254
by @lirantal, which somehow got overlooked when merging 0.4.0 into
master.
Added tests for the Logger configuration.
Added the log settings to the Test env config.
Added environment variables for the log settings in the Test &
Production env configs.
Moved the Morgan Express middleware outside of the NODE_ENV ===
'development' check. Morgan should be used in all environments, and use
the settings set in each env config.
Changed the wording of the Stream option comments in the env configs.
Added Rotating Logs functionality, and refactored the log Stream
options. Added a new npm package, FileStreamRotator, for use with
Morgan's rotating logs functionality.
Also, refactored the log configuration tests to be more maintainable.
Added more tests, and refactored test suite to use mock-fs.
