zebra stripe report tables

pyglance/glance/basereport.txt

@@ -20,6 +20,10 @@ Copyright (c) 2011 University of Wisconsin SSEC. All rights reserved.
 		td.n,th.n { text-align: right; }
 		body { font-family: sans-serif; }
 		h4 { margin-bottom: 0; }
+		tr th { background-color: white; }
+		tr:nth-child(even) { background-color: #EEE; }
+		table { border-collapse: collapse; }
+		td, th { padding-left: 0.5em; padding-right: 0.5em; }
 		</style>
     </head>