bump version

latest.json

 {
 {
-  "stable": "5.0.0",
-	"testing": "5.0.0"
+  "stable": "5.0.4",
+  "testing": "5.0.4"
 }
 }

package.json

@@ -4,7 +4,7 @@
     "company": "Grafana Labs"
     "company": "Grafana Labs"
   },
   },
   "name": "grafana",
   "name": "grafana",
-  "version": "5.1.0-pre1",
+  "version": "5.2.0-pre1",
   "repository": {
   "repository": {
     "type": "git",
     "type": "git",
     "url": "http://github.com/grafana/grafana.git"
     "url": "http://github.com/grafana/grafana.git"