Add title attribute to link karma in header bar.

r2/r2/public/static/css/reddit.css

@@ -248,7 +248,11 @@ ul.flat-vert {text-align: left;}
     background-image: url(../modmailgray.png);  /* SPRITE */
 }
 .user {color: gray;}
-
+.user .userkarma {
+    cursor: help;
+    font-weight: bold;
+    border-bottom: 1px dotted gray;	
+}
 
 .pagename {
     font-weight: bold;

r2/r2/templates/redditheader.html

@@ -76,7 +76,7 @@
     %else:
       <span class="user">
          ${plain_link(c.user.name, "/user/%s/" % c.user.name, _sr_path=False)}
-         &nbsp;(<b>${c.user.safe_karma}</b>)
+         &nbsp;(<span class="userkarma" title="${_("link karma")}">${c.user.safe_karma}</span>)
       </span>
 
       ${separator("|")}