fixes #429

\yii\rbac\DbManager::isAssigned() signature fix

[READY] RBAC DbManager fixes

https://github.com/yiisoft/yii2/commit/a6c251d2ab6d222b5318cc7fa21eb3791a296c62#commitcomment-3291785

Removed dot in path

- update composer json to chosse right path
- set vendorPath in application config if not default

issue #418

[READY] jQuery UI accordion comments

#72 Improve the "asset" command Iteration 3

Moved add prefix ($this->keyPrefix) to the key in function buildKey().

Moved add prefix ($this->keyPrefix) to the key in function buildKey(). Could it be better?