Ensure the appropriate permissions are used for the routes and toolbar

see comments on MR

basically:
config has Editor has create permissions:

Running debug shows different values for different ways of testing permissions:

$taxonomy_vocabulary->access('create') is buggy
see https://www.drupal.org/project/drupal/issues/2886800 🐛 EntityAccessControlHandler::createAccess() and EntityAccessControlHandler::access() return false positive cache hits because it ignores context Needs work

Please don't put multiple issues into a same ticket - it makes it hard to test and review:
- new permissions structure
- add pagination on 'admin/structure/taxonomy_manager/voc' page

When status of ticket goes into "needs review" please provide screenshots and pages to be reviewed