Update UPGRADE.md
Merge pull request #103 from marc7000/patch-2

Update UPGRADE.md
removed outdated messages
fixed debug toolbar path
fixed ckeditor config, updated deps
updated lock file
updated deps
Update README.md
Update README.md
Update README.md
added guide to docs (moved from wiki)
Merge commit '2809744df1a6159872ed9dc3494e889a37a39449' into 3.0
Update Home.md
updated deps; reverted debug toolbar to #85d595 because a newer version introduces several bugs (content in AJAX request, invisible toolbar switcher)
Update Cheat-Sheet.md
Update UPGRADE.md

add in config/main.php config settings for bwoester/yii-static-events-component, bwoester/yii-event-interceptor and EventBridgeBehavior
Merge pull request #107 from Quexer69/patch-2

add missing information in UPGRADE.md
Update README.md
Merge branch '4.0'

Conflicts:
	.gitignore
	README.md
	UPGRADE.md
	app/config/main.php
	app/messages/en/app.php
	app/messages/lv/app.php
	composer.json
	composer.lock
Update README.md