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/Form/ProjectEditForm.php

@@ -63,6 +63,14 @@ class ProjectEditForm extends AbstractType
                 'label' => 'label.orderDate',
                 'required' => false,
             ])
+            ->add('start', DateTimePickerType::class, [
+                'label' => 'label.project_start',
+                'required' => false,
+            ])
+            ->add('end', DateTimePickerType::class, [
+                'label' => 'label.project_end',
+                'required' => false,
+            ])
             ->add('customer', CustomerType::class, [
                 'query_builder' => function (CustomerRepository $repo) use ($builder, $customer) {
                     $query = new CustomerFormTypeQuery($customer);