Pull language fix into dev branch (#34)

* Fix Typo (#32)

Dictionary was spelled Dicrionary.

* Fix: Check Language Retuned by Umbraco is the one we asked for.

* v8.1.1 release files (real 8.1.1 this time)

Dist/package.ContentEdition.xml

@@ -20,7 +20,7 @@
     <readme>
       <![CDATA[
       <p>
-      Adds Content/Media/Dicrionary Items/and Domains to uSync Process
+      Adds Content/Media/Dictionary Items/and Domains to uSync Process
       </p>]]>
     </readme>
   </info>

uSync8.Core/Serialization/Serializers/LanguageSerializer.cs

@@ -101,8 +101,18 @@ protected override SyncAttempt<XElement> SerializeCore(ILanguage item)
         public override bool IsValid(XElement node)
             => (base.IsValid(node) && node.Element("CultureName") != null && node.Element("IsoCode") != null);
 
-        protected override ILanguage FindItem(string alias) =>
-            localizationService.GetLanguageByIsoCode(alias);
+        protected override ILanguage FindItem(string alias)
+        {
+            // GetLanguageByIsoCode - doesn't only return the language of the code you specify
+            // it will fallback to the primary one (e.g en-US might return en), 
+            //
+            // based on that we need to check that the language we get back actually has the 
+            // code we asked for from the api.
+            var item = localizationService.GetLanguageByIsoCode(alias);
+            if (item == null || !item.CultureInfo.Name.InvariantEquals(alias)) return null;
+            return item;
+        }
+
 
         protected override ILanguage FindItem(Guid key) => default(ILanguage);