beta 3 (#3780)

* merge master - allow to upload twig invoice templates via UI
* support adding existing teams with same name
* permissions cannot be set right after role was created - fixes #3777
* allow to deactivate unique customer number validation - fixes #3762 
* invalid message when trying to edit locked or exported timesheets in calendar - fixes #3766
* updated icons and manifest - fixes #3761

tests/DependencyInjection/ConfigurationTest.php

@@ -309,6 +309,7 @@ class ConfigurationTest extends TestCase
                     1 => 'templates/invoice/renderer/',
                 ],
                 'number_format' => '{Y}/{cy,3}',
+                'upload_twig' => true,
             ],
             'export' => [
                 'documents' => [
@@ -430,6 +431,9 @@ class ConfigurationTest extends TestCase
             ],
             'customer' => [
                 'number_format' => '{cc,4}',
+                'rules' => [
+                    'allow_duplicate_number' => false,
+                ],
             ],
         ];