fix NullReferenceException in SqlTimingParameter.GetHashCode

null Value is perfectly acceptable.
Merge pull request #935 from migajek/master

fix NullReferenceException in SqlTimingParameter.GetHashCode
Add option to override embedded resource filename heuristic with Config.EmbeddedResourceTreatAsFiles
Update SS.Text dll
Add IServerEvents.GetNextSequence() API for incrementing either local or distributed counter
Globally accessible hooks into the session / auth lifecycle.

This supports IPlugin authors, allowing session lifecycle hooks to be
registered without needing changes to the IAuthSession
WebSudo feature, allowing requests to be tagged with [WebSudoRequired]

This feature forces a fresh login to be performed by the user for any
action marked with [WebSudoRequired]. Only subsequent logins will grant
the elevated access for the configured duration (default 20 minutes).

Example Configuration:
var authFeature = new AuthFeature(
    () => new WebSudoAuthUserSession(),
    new IAuthProvider[] { new CredentialsAuthProvider(new AppSettings()),})
    {
        RegisterPlugins = { new WebSudoFeature() }
    };
this.AddPlugin(authFeature);
Align field ordering to flow from base class
Merge pull request #936 from tvjames-Forks/auth-session-extension-points

Auth session extension points and a WebSudo feature
Refactor new AuthEvents
WebSudo feature tests
Code-gen signed projs
Merge pull request #937 from tvjames-Forks/auth-session-extension-points

WebSudo feature tests for #936
Populate UserId in CredentialAuthProvider AuthenticateResponse
Merge branch 'master' of github.com:ServiceStack/ServiceStack
Don't override MVC's ViewDataDictionary
Update SS dlls
Add latest RedisServerEvents
Remove BuildTask project
Remove BuildTask test projects