Merge branch '5522-css-tabs' into 'develop'

Bulk spaces to tabs in all CSS, #5522

See merge request ispconfig/ispconfig3!1740

Author: Till Brehm

interface/web/js/chosen/chosen.css

@@ -91,4 +91,4 @@
 }
 .icon-delete:before {
 	content: "\e613";
-}
+}