Release 2.0.18 (#4003)

* prevent too long values for user preferences
* add chart value 0 to y-axis if last value > 0, to always display the zero line (project details)
* add user-preferences to invoice hydrator
* DateTime vs DateTimeInterface
* simplify permission config
* fix query for teamleads limiting to only selected teams not possible

tests/Invoice/Renderer/DebugRendererTest.php

@@ -276,6 +276,8 @@ class DebugRendererTest extends TestCase
             'entry.user_display',
             'entry.user_alias',
             'entry.user_title',
+            'entry.user_preference.foo',
+            'entry.user_preference.mad',
             'entry.activity',
             'entry.activity_id',
             'entry.activity.meta.foo-activity',