Merge pull request #1 from yiisoft/master

Update from original
Merge pull request #2 from yiisoft/master

Update from original
#4, Add new translation messages and translate that for fa-IR language.

Signed-off-by: nabi <nabikaz@gmail.com>
Merge pull request #6480 from NabiKAZ/fa_ir-translate-messages

[skip ci] Add new translation messages and translate that for fa-IR language.
Update mongodb-setup.sh

fixed hhvm build.
fixed namespace collision

AssetBundle can not be imported because the class already exists in this namespace.

fixes #6475