random improvements (#5382)

* remove permission check, as own timesheets should always be visible
* new methods to create datetime
* allow access to user roles in javascript
* support class for dropdown actions
* allow to edit internal rate
* support human readable duration in export via user configuration
* allow to order timesheet listing by user, exported and billable field
* bump codecov action

assets/js/plugins/KimaiUser.js

@@ -49,4 +49,11 @@ export default class KimaiUser extends KimaiPlugin {
         return this.user.superAdmin;
     }
 
+    /**
+     * @returns {array}
+     */
+    getRoles() {
+        return this.user.roles;
+    }
+
 }