Merge pull request #4838 from nenad-zivkovic/master

Fixes typo in concept-configurations.md
Revert "Fixes #4829: Removed `PARSING_ONLY` from `\yii\rest\UrlRule` to allow creating non-GET URLs for forms and tests"

This reverts commit 4ffbfec9aa032e5923b6fdfd7db9bc7e25275b40.
simplified composer call to one

speed up process a lot because 3 composer updates are reduced to one
Update README.md
updated bower dependency [skip ci]
unneeded use class
Merge pull request #4841 from tebazil/patch-1

[ci skip] unneeded use Model
fixed boolean handling for PostgreSQL

- do not allow boolean values for integer columns
- use native boolean type with boolean values
- removed workaround that turned out to be wrong when schema and values
  are used correctly. Workaround resulted from wrong usage of boolean
  values before.

fixes #4672