Extensions were added twice
Updated changelog
French intro-upgrade-from-v1 (wip) [skip ci]
Spanish start-gii.md [skip ci]
Fix typo [skip ci]
French intro-upgrade-from-v1 (wip) [skip ci]
French intro-upgrade-from-v1 (wip) [skip ci]
Merge pull request #3849 from lucianobaraglia/translation-es

Spanish start-gii.md [skip ci]
guide WIP [skip ci]
[Uk] Starting to translate docs [skip ci]
Merge pull request #3854 from yiiframework-com-ua/uk_translate

[Uk] Starting to translate docs [skip ci]
Fix Typo [skip ci]
Doc section for 'Jquery UI Widgets' added
Merge branch 'master' of github.com:yiisoft/yii2
Fixes #3358: Removed automatic CSRF meta tag generation by `View`. Added `Html::csrfMetaTags()` and its call to main layout files
Merge branch 'master' of git://github.com/yiisoft/yii2
French intro-upgrade-from-v1 (wip) [skip ci]
Fix assets links [skip ci]
Merge pull request #3856 from klevron/temp

Fix assets links [skip ci]
French intro-upgrade-from-v1 (wip) [skip ci]