release 2.0 beta (#3722)

* remove twitter link
* remove WIP file
* adjust release draft message
* reset code coverage threshold back to 0.5
* changed wordings
* re-activate wizard for fixture accounts
* fix repo url and license
* license identifier
* bump version
* moved Kimai 1 import command from core to plugin
* do not traverse into invoice template subdirectories (#3735)
* fix branch alias
* composer update
* switch language on wizard select
* new twig function to create qr code
* fix daily stats in timesheet listing
* improved html invoice templates

tests/phpstan.neon

@@ -2302,11 +2302,6 @@ parameters:
             count: 1
             path: Command/InvoiceCreateCommandTest.php
 
-        -
-            message: "#^Method App\\\\Tests\\\\Command\\\\KimaiImporterCommandTest\\:\\:testCommandName\\(\\) has no return type specified\\.$#"
-            count: 1
-            path: Command/KimaiImporterCommandTest.php
-
         -
             message: "#^Method App\\\\Tests\\\\Command\\\\PluginCommandTest\\:\\:getCommandTester\\(\\) has no return type specified\\.$#"
             count: 1