Added a debug toolbar panel for MongoDB
merge with upstream
Dynamic naming added to `DbPanel`
`MongoDbPanel` addition mentioned at CHANGELOG.md and README.md
`DbPanel` summary view fixed
english
complete the translation of routing section and wait for final check.
replace a term
Update concept-behaviors.md

增加` php代码正确显示
Update concept-events.md

修正小错误
for check
new chinese translation
Merge branch 'master' of https://github.com/yii2-chinesization/yii2
checking and polishing runtime-route
Use a slightly more recent version
for check
new translation
Merge pull request #28 from funson86/master

Translated structure-filters.md and structure-widgets.md. [skip ci]
for check
for check