[TASK] Starting integrating new backend look&feel

Classes/ViewHelpers/Backend/ControlViewHelper.php

Classes/ViewHelpers/Backend/EditOnClickViewHelper.php

Classes/ViewHelpers/Backend/IconViewHelper.php

...wHelpers/Backend/Widget/Controller/PaginateController.php

Classes/ViewHelpers/Backend/Widget/PaginateViewHelper.php

Classes/ViewHelpers/SetViewHelper.php

Classes/ViewHelpers/Widget/UriViewHelper.php

Resources/Private/Backend/Partials/ButtonBar.html

Resources/Private/Templates/Queue/Index.html

.../Templates/ViewHelpers/Backend/Widget/Paginate/Index.html

Resources/Public/Scripts/Backend.js