Merge branch 'feature_5_2_0' into 'master'

Classes/Controller/OverviewController.php

Classes/ViewHelpers/PageBrowserViewHelper.php

Configuration/FlexForms/Overview.xml

Resources/Private/Language/de.locallang.xlf

Resources/Private/Language/de.locallang_db.xlf

Resources/Private/Language/locallang.xlf

Resources/Private/Language/locallang_db.xlf

Resources/Private/Partials/Filter.html

Resources/Private/Templates/ListByCategory/Index.html

Resources/Private/Templates/Overview/Overview.html

...Private/Templates/Overview/OverviewWithoutCategories.html

Resources/Public/Sass/styles.scss

Resources/Public/Scripts/CategoryFilter.js

composer.json

ext_emconf.php