Bastion: fix clash between angular-gettext and ng-if.

Fixes the following JS error that occurs if you use the `translate` directive and `ng-if` on the same element:

```
Error: You should add a ng-if attribute whenever you add a translate attribute.
    at assert (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular-gettext/angular-gettext.js?body=1:72:21)
    at http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular-gettext/angular-gettext.js?body=1:77:11
    at nodeLinkFn (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:6227:13)
    at compositeLinkFn (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:5633:15)
    at publicLinkFn (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:5542:30)
    at boundTranscludeFn (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:5656:21)
    at controllersBoundTransclude (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:6248:18)
    at Object.ngIfWatchAction [as fn] (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:18307:15)
    at Scope.$digest (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:11809:29)
    at Scope.$apply (http://wraines-sandbox.rdu.redhat.com:3000/assets/bastion/angular/angular.js?body=1:12062:24) <!-- translate:  --> 
```