role manage ui: MDL-8313 First version of the basic/advanced role define page.

This is being separated from manage.php. This code is only partly working. It displays (most) of a role definition, but does not yet let you save changes. However, I wanted to commit it before going home on Friday night. Since this is new code, it won't break anything.

theme/standard/styles_color.css

@@ -1185,7 +1185,7 @@ table.explainpermissions .decisive {
 table.explainpermissions .overridden {
   text-decoration: line-through;
 }
-#admin-roles-manage .capdefault {
+#admin-roles-define .capdefault {
   background-color:#dddddd;
   border: 1px solid #cecece;
 }

theme/standard/styles_layout.css

@@ -1164,6 +1164,7 @@ table.rolecap label {
 table.rolecap .cap-desc .cap-name,
 .rolecap .note {
   display: block;
+  padding: 0 0.5em;
 }
 
 #admin-roles-override .cell.c1,