Rework the old logo

* Re-work the old banner logo for the Sphinx docs
* Remove the remaining leftover assets from the old web site

So this is one possibility, I retained the other logo files so we have
options to play with.

Change-Id: Iac15899780072450dc30600a719283c0e2b0c0ae

doc/source/assets/css/local.css

@@ -1,122 +0,0 @@
-
-a.brand {
-	background: url(../images/small_logo.png) no-repeat left 6px;
-	width: 166px;
-	text-indent: -9999px;
-}
-
-code {
-  background-color: #ffffff;
-}
-
-#home .hero-unit {
-  background: url(../images/header_bg.png) top left repeat-x;
-	color: #fff;
-	padding-left: 25px;
-	padding-right: 25px;
-	height: 161px;
-}
-
-#home .hero-unit {
-	margin-right: ;
-}
-
-h1#main_header {
-	background: url(../images/logo.png) top left no-repeat;
-	text-indent: -9999px;
-}
-
-.sub_header {
-	font-size: 12px;
-	font-family: "anivers";
-	font-weight: normal;
-	width: 420px;
-}
-
-#home .hero-unit a {
-	color: #fff;
-	text-decoration: underline;
-}
-
-.clear {
-	clear: both;
-}
-
-ol#getting_started {
-	list-style: none;
-	width: 396px;
-	margin-top: -45px;
-	margin-right: 0;
-	margin-left: 72px;
-}
-
-ol#getting_started li {
-	background: url(../images/quickstart.png) top left no-repeat;
-}
-
-ol#getting_started li pre {
-	font-size: 11px;
-	padding: 5px;
-	background: #4d7ead;
-	border-color: #2c5d8d;
-	color: #fff;
-	overflow: auto;
-}
-
-li#ubuntu {
-	height: 46px;
-	padding: ;
-	padding-left: 82px;
-	padding-top: 27px;
-	margin-bottom: 14px;
-}
-
-li#git {
-	background-position: left -70px !important;
-	height: 61px;
-	padding: ;
-	padding-left: 82px;
-	padding-top: 4px;
-	margin-bottom: 25px;
-}
-
-
-li#install {
-	background-position: left bottom !important;
-	height: 61px;
-	padding: ;
-	padding-left: 82px;
-	padding-top: 4px;
-	margin-bottom: 25px;
-}
-
-h2 small {
-	font-size: 12px;
-	font-style: italic;
-}
-
-.container section {
-	margin-bottom: 25px;
-}
-
-
-thead, tfoot{
-	background: #ededed;
-	color: #444444;
-}
-
-table {
-	color: #444;
-}
-a.table-action {
-	display: block;
-	width: 45px;
-}
-
-footer {
-	clear: both;
-}
-
-.wat {
-	margin-top: 33px;
-}

doc/source/index.rst

@@ -1,6 +1,8 @@
 DevStack - an OpenStack Community Production
 ============================================
 
+.. image:: assets/images/logo-blue.png
+
 .. toctree::
    :glob:
    :maxdepth: 1