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

src/Command/ImportTimesheetCommand.php

@@ -448,6 +448,7 @@ class ImportTimesheetCommand extends Command
                 if (is_int($customer)) {
                     $tmpFallback = $this->customers->find($fallback);
                 } else {
+                    /** @var Customer|null $tmpFallback */
                     $tmpFallback = $this->customers->findOneBy(['name' => $fallback]);
                 }
             }