added project start and end date (#1303)

* added sortable js library
* activity in invoice is optional
* added javascript widget for paginated boxes
* fix activity dropdown for globals only
* added timesheet service to reduce code duplication
* use repository to query for teams in dropdowns
* added project validator
* validate project start and end against timesheet
* include begin and end in dynamic form requests for projects
* added timezone and language option to import flag, improve timesheet import speed
* deactivate cross-timezone filter
* add virtual fields to field order list
* composer update
* added param to ignore dates
* position loader icon fixed - fixes #1330
* permission problem when creating a new project - fixes #1340
* remove dev dependencies webserver and thanks bundle
* stop information leak (begin and end date) in duration mode - fixes #1307
* unify timesheet edit dialog for user and admins
* fix security issue, own rates exposed to unauthorized users in multi-update dialog

tests/phpstan.neon

@@ -10,6 +10,7 @@ parameters:
         - '#Access to an undefined property Faker\\Generator::\$catchPhrase.#'
         - '#Access to an undefined property Faker\\Generator::\$bs.#'
         - '#Call to static method PHPUnit\\Framework\\Assert::assertSame\(\) with App\\Entity\\[a-zA-Z0-9]+ and null will always evaluate to false.#'
+        - '#Method *::getUserByName\(\) should return App\\Entity\\User\|null but returns object|null.#'
     excludes_analyse:
         - %rootDir%/../../../tests/Ldap/LdapDriverTest.php
     inferPrivatePropertyTypeFromConstructor: true