Improved Redmine links:

* issue and changeset links generated only if the object exists
* issue subject and status appear in the link title
* strike issue link if issue is closed
* red wiki page link if page doesn't exist
* new icon for external links

Wiki page cache had to be disabled.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@714 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/stylesheets/application.css

@@ -615,7 +615,7 @@ div.wiki table, div.wiki td, div.wiki th {
 div.wiki a {
     background-position: 0% 60%;
     background-repeat: no-repeat;
-    padding-left: 14px;
+    padding-left: 12px;
     background-image: url(../images/external.png);
 }
 
@@ -624,6 +624,10 @@ div.wiki a.wiki-page, div.wiki a.issue, div.wiki a.changeset, div.wiki a.email {
     background-image: none;
 }
 
+div.wiki a.new {
+    color: #b73535;
+}
+
 div.wiki code {
     font-size: 1.2em;
 }