gitweb: whitespace cleanup

Do not use tabs to align variable initialization (actually use
tabs only at the beginning of line, for code indent).  Remove trailing
whitespace.  Make whitespace usage more consistent.

Signed-off-by: Jakub Narebski <jnareb.com>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

gitweb/gitweb.css

 body {
 	font-family: sans-serif;
 	font-size: 12px;
-	border:solid #d9d8d1;
+	border: solid #d9d8d1;
 	border-width: 1px;
 	margin: 10px;
 	background-color: #ffffff;
@@ -33,7 +33,7 @@ div.page_header a:hover {
 }
 
 div.page_nav {
-	padding:8px;
+	padding: 8px;
 }
 
 div.page_nav a:visited {