Edited Unassigned: UTF-8 in SCSS comments cause exception [77]

utf-8 comments inside file cause errors like

"Invalid CSS after "...00441\00044F */": expected ")", was "" "

scss code example:

```
$buttons: (
/* latin - no error */
(add, -198px),
/* utf-8 - error */
(resume, -220px) );
...
```

trace is

```
[AssetTranslationException: During translation of SCSS-code, readed from the file '/Content/sass/components/_components.scss', to CSS-code syntax error has occurred.
See more details:

Message: Invalid CSS after "...00441\00044F */": expected ")", was ""
File: /Content/sass/components/states/server.scss
Line number: 56
]
BundleTransformer.SassAndScss.Translators.SassAndScssTranslator.InnerTranslate(IAsset asset, Boolean enableNativeMinification) +370
BundleTransformer.SassAndScss.Translators.SassAndScssTranslator.Translate(IList`1 assets) +327
BundleTransformer.Core.Transformers.TransformerBase.Translate(IList`1 assets, Boolean isDebugMode) +95
BundleTransformer.Core.Transformers.TransformerBase.Transform(IList`1 assets, BundleContext bundleContext, BundleResponse bundleResponse, VirtualPathProvider virtualPathProvider, Boolean isDebugMode) +81
BundleTransformer.Core.Transformers.TransformerBase.Process(BundleContext bundleContext, BundleResponse bundleResponse, Boolean isDebugMode) +353
BundleTransformer.Core.Transformers.TransformerBase.Process(BundleContext bundleContext, BundleResponse bundleResponse) +35
System.Web.Optimization.Bundle.ApplyTransforms(BundleContext context, String bundleContent, IEnumerable`1 bundleFiles) +273
System.Web.Optimization.Bundle.GenerateBundleResponse(BundleContext context) +141
BundleTransformer.Core.Resolvers.CustomBundleResolver.GetBundleResponse(Bundle bundle, BundleContext context) +45
BundleTransformer.Core.Resolvers.CustomBundleResolver.GetBundleContents(String bundleVirtualPath) +160
System.Web.Optimization.AssetManager.DeterminePathsToRender(IEnumerable`1 assets) +233
System.Web.Optimization.AssetManager.RenderExplicit(String tagFormat, String[] paths) +35
System.Web.Optimization.Styles.RenderFormat(String tagFormat, String[] paths) +107
System.Web.Optimization.Styles.Render(String[] paths) +21
ASP._Page_Views_Shared__Layout_cshtml.Execute() in c:\OversunWorkspace\OversunPanel.Web\Sources\OversunPanel.Web\Views\Shared\_Layout.cshtml:21
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +198
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +105
```

versions:
BundleTransformer.Core - 1.9.5
BundleTransformer.MicrosoftAjax - 1.9.6
BundleTransformer.SassAndScss - 1.9.4