Bug 1105869 -  Add to grunt the generation of the files required to inst...

...all Loop as part of make reset-gaia
+    if (!grunt.config.get('origin')) {
+      console.error("The embed-in-gaia target cannot be run directly.\n"+
+                    "Please run grunt [release|releaseDevelopment|releaseProduction]\n");
+      return;
+    }
+
That way if someone whose name I don't want to remember tries to execute this directly he will notice quickly the problem ;)