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_Nebraska.css

@@ -114,7 +114,7 @@ h1 {
     font:normal 2em/1.2em serif;
 }
 h2 {
-    display:none;
+    display:block;
 }
 h3 {
     font:normal 2em/1.2em serif;
@@ -138,7 +138,6 @@ h5, h6 {
 
 p#description {
     color:#542;
-    max-width:800px;
     margin:0;
     padding:1em 20px;
     background-color:#FFF;