* 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
* bump version
* fix translation ids
* added css classes to modify form with custom css
* improve export pdf file names
* respect financial year in new report
* added new InvoiceCalculator: price
* upgrade packages and node-sass to v7
* title pattern for customer, project and activity via API
* support negative money without currency
* fix sub-locale in print export template
* fix overbooking validation for monthly budget
* fix copying entities with different set of custom-fields compared to the current configuration
* improve report visibility
* fix timesheet duration, which breaks validation
* added contributing section in README
* do not allow to change project for existing activities - fixes#2576
* bump theme version to fix FOSUserBundle dependency
* use entity color instead of inherited one - fixes#2200
* set default times for daterange objects
* allow to show order and order by fields
* move search to modal
* more options for page size
* save export visibility in cookie
- refactored admin controller and templates
- plugin support for entity actions
- changed column mail to email in customer table
- refactored theme events
* replace has_role() with is_granted()
* added basic integration test classes for main controller
* added basic integration test classes for admin controller
