Fixed network graph keyboard nav

app/assets/javascripts/graph.js

 function initGraphNav() { 
-  $("body").keydown(function(e) {
+  $(".graph svg").css("position", "relative");
+  $("body").bind("keyup", function(e) {
     if(e.keyCode == 37) { // left
       $(".graph svg").animate({ left: "+=400" });
     } else if(e.keyCode == 39) { // right

app/assets/stylesheets/common.scss

@@ -702,4 +702,3 @@ li.note {
     }
   }
 }
-

app/assets/stylesheets/gitlab_bootstrap.scss

@@ -579,4 +579,3 @@ ul.breadcrumb {
     border-top:1px solid #eee;
   }
 }
-