UI improvement (#1829)

* open "create new project/activity" form in modal
* re-use action translation for create action title
* do not pre-select first customer in list - fixes #1828
* sort user preferences in sections for better visual grouping
* show comment date only in hover of user avatar

src/Form/ProjectEditForm.php

@@ -78,6 +78,7 @@ class ProjectEditForm extends AbstractType
                 'required' => false,
             ]))
             ->add('customer', CustomerType::class, [
+                'placeholder' => (null === $id && null === $customer) ? '' : false,
                 'query_builder' => function (CustomerRepository $repo) use ($builder, $customer) {
                     $query = new CustomerFormTypeQuery($customer);
                     $query->setUser($builder->getOption('user'));