Precompile global.asax. Fixes #432

Author: davidebbo

src/WebJobs.Script.WebHost/Properties/PublishProfiles/FileSystem.pubxml

@@ -13,5 +13,9 @@ by editing this MSBuild file. In order to learn more about this please visit htt
     <ExcludeApp_Data>False</ExcludeApp_Data>
     <publishUrl>Publish\SiteExtensions\Functions</publishUrl>
     <DeleteExistingFiles>False</DeleteExistingFiles>
+    <PrecompileBeforePublish>True</PrecompileBeforePublish>
+    <EnableUpdateable>False</EnableUpdateable>
+    <DebugSymbols>False</DebugSymbols>
+    <WDPMergeOption>DonotMerge</WDPMergeOption>
   </PropertyGroup>
 </Project>