Reworded upload package messaging (bug 793896)

mkt/developers/templates/developers/apps/status.html

@@ -142,8 +142,8 @@
           {{ csrf() }}
           <p>
           {% trans %}
-            Use the fields below to upload your packaged app. After upload, a
-            series of automated validation tests will be run on your file.
+            Upload a new version of this packaged app. New versions must be
+            reviewed before they will be available for install.
           {% endtrans %}
           </p>
           <div id="submit-upload upload-file">