codeception configs, web config modifed for db-settings
new entry points for application
colors added
tests modified, bootstrap added
configs fixed and improved
added testcase for unit tests, bootstrap files improved, tests inherited from base testcase
updated extension documentation; added sections dependencies, versioning and authorization
reverted events
updated code style, added autoloading and prefix examples
updated dependencies and testing
added link to composer docs about autoloading
modified tests according yii2-codeception extension
added new extension yii2-codeception, modified composer settings
added hhvm hiphop php vm to travis to run test on it

http://www.hhvm.com/blog/2393/hhvm-2-3-0-and-travis-ci
fixed travis timezone config
reverted travis php config fix
commented hhvm test on travis until bugs have been fixed
Added `Widget::autoIdPrefix` to support prefixing automatically generated widget IDs
Fixes #1509: The SQL for creating Postgres RBAC tables is incorrect
Fixes #1500: Log messages exported to files are not separated by newlines