Mainz css file produces left aligned FamilyMap pages (#489)

* Mainz css file produces left aligned FamilyMap pages

Solving Mainz problem creates new ones with Basic-Blue
and Nebraska styles sheet.

Some cleanup with unused css file (GeoView.css)

Fixes #10268

* Many problems with css files and the ancestor tree

* media file not created if we have unused media.

data/css/Web_Basic-Blue.css

@@ -134,7 +134,6 @@ h5, h6 {
     margin:1.3em 0 .5em 1em;
 }
 p#description {
-    max-width: 800px;
     margin: 0;
     padding: 1em 20px;
     text-indent: 30px;