tests improved, verify added
beforeSubmit function after global validation all fields forms
"Using 3rd-Party Libraries" guide added
"Using 3rd-Party Libraries" guide updated
Missing "md" extension added for "Using 3rd-Party Libraries" guide part
Merge branch 'master' of github.com:yiisoft/yii2 into 1837-3rd-party-doc
changed truncate to delete
except option added
changes of other pr reverted
afterFind event in AR is now called after relations have been populated

fixes #1993
reworked fix for #1993
removed phpdoc about nonexisting param
changelog added
changelog added
fixed test break
Merge pull request #1995 from Ragazzo/fix_for_fixture_controller

changed truncate to delete
Merge pull request #1997 from cebe/1993-fixed-ar-afterFind

afterFind event in AR is now called after relations have been populated
filter fix
Some Basic App readme updates [skip ci]
Merge pull request #1999 from lucianobaraglia/basic-app-doc-update

Some Basic App readme updates [skip ci]