Fixed missing Helper usings.

Teknik/Areas/Help/Views/Help/Upload.cshtml

@@ -1,5 +1,7 @@
 @model Teknik.Areas.Help.ViewModels.HelpViewModel
 
+@using Teknik.Helpers
+
 <div class="container">
     <div class="row">
         <div class="col-sm-10 col-sm-offset-1">

Teknik/Areas/Upload/Views/Upload/Download.cshtml

@@ -1,5 +1,7 @@
 @model Teknik.Areas.Upload.ViewModels.DownloadViewModel
 
+@using Teknik.Helpers
+
 <script>
     var encScriptSrc = '@Scripts.Url("~/bundles/cryptoWorker")';
     var aesScriptSrc = '@Scripts.Url("~/bundles/crypto")';