gitweb: let page header grow on mobile for long wrapped project names

Signed-off-by: Rito Rhymes <rito@ritovision.com>

Author: ritorhymes

gitweb/static/gitweb.css

@@ -42,7 +42,7 @@ a.list img.avatar {
 }
 
 div.page_header {
-	height: 25px;
+	min-height: 25px;
 	padding: 8px;
 	font-size: 150%;
 	font-weight: bold;