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

config/serializer/App/Entity.Project.yml

@@ -1,6 +1,6 @@
 App\Entity\Project:
     exclusion_policy: All
-    custom_accessor_order: [id, name, comment, visible, orderNumber, orderDate, customer, fixedRate, hourlyRate, color, budget, timeBudget, metaFields]
+    custom_accessor_order: [id, name, comment, visible, orderNumber, orderDate, customer, start, end, fixedRate, hourlyRate, color, budget, timeBudget, metaFields, parentTitle]
     properties:
         id:
             include: true
@@ -23,6 +23,12 @@ App\Entity\Project:
         orderDate:
             include: true
             groups: [Entity]
+        start:
+            include: true
+            groups: [Project]
+        end:
+            include: true
+            groups: [Project]
         fixedRate:
             include: true
             groups: [Project]