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_Mainz.css

@@ -67,7 +67,7 @@ body {
     background: url(../images/Web_Mainz_Bkgd.png) black repeat;
 }
 body > div {
-    width: 950px;
+    width: 85%;
     margin: 0px auto;
     background: url(../images/Web_Mainz_Mid.png) #FFF2C6 repeat;
     overflow: hidden;
@@ -90,6 +90,12 @@ h1 {
     font-style: italic;
     margin-left: 2em;
 }
+h2 {
+    display:block;
+    margin:0;
+    padding:0;
+    text-align: center;
+}
 h3 {
     font-size: xx-large;
     font-weight: normal;
@@ -143,7 +149,7 @@ div#nav ul li, #subnavigation ul li {
     float: left;
 }
 div#nav ul li a, #subnavigation ul li a {
-    display: block;
+    display: run-in;
     padding: 0.4em 0.8em 0.3em 0.8em;
     font-size: smaller;
     font-family: sans-serif;