greater differentiation in display of citations/quotes for trac tickets

[Tay Ray Chuan]

I believe this would differentiate quotes more clearly from surrounding text.

diff a/trac/css/trac.css b/trac/css/trac.css
--- a/trac/css/trac.css
+++ b/trac/css/trac.css
@@ -219,7 +219,9
 blockquote.citation { 
  margin: -0.6em 0;
  border-style: solid;
  border-width: 0 0 0 2px;
- padding-left: .5em;
+ padding: .5em;
  border-color: #b44;
+ font-style: italic;
+ background: #F7F7F7;
}

For the background, we could make it progressively darker the deeper the nesting, like how the vertical rule on them changes colour according to depth. But I'll leave that for later, after interest is expressed.

[Tay Ray Chuan]

If you have Chrome or Firefox with Firebug, you might want to test this with #6148, as it has replies two-levels deep.

[Russell Keith-Magee]

Trac shouldn't be a repository of complex discussions, and making it easier to track complex discussions will only serve to encourage a practice we don't want. If a complex discussion is required, it should be happening on django-users/dev.