1xx status is not that common.

small typos changes

Some fixes for #3074 Hungarian translation

without this the form does not allow choosing a different connection id

if component id is different from 'db'

Update apps-advanced.md

just a type correction and suggestion on adding a comma and one word (ie 'by') to make it more easily to be understand.

#3073 added Hungarian translation

Re-implemented RBAC by following more closely to the original NIST RBAC model. Dropped `yii\rbac\PhpManager`.

Implement ActiveForm and ActiveField

add guide about filtering and sorting related columns

fixes #1581 and #3013

added a hint and link

Bulgarian translation

* 'master' of github.com:yiisoft/yii2: (79 commits)
  Refactored app bootstrap logic.
  Update authorization.md
  Fixes #3052: Fixed the issue that cache dependency data is not reused when `reusable` is set true
  start debug logging only if debug runs when bootstrap.
  Update finnish translation
  Add ODBC support to yii\db\Connection
  updated error handler and requirement checker links.
  fixed broken API links [skip ci]
  added more doc [skip ci]
  update class map.
  Fixes #2034: Added `ContentNegotiator` to support response format and language negotiation
  renamed attributes to attributeNames in model
  updated phpdoc
  Removed `Application::preload` in favor of `Application::bootstrap`
  Update module-debug.md
  Update model.md
  Fixes
  Update basics.md
  typo fix [skip ci]
  Added `HtmlResponseFormatter` and `JsonResponseFormatter`
  ...