Added Razor Nested Layout failing test

Created a new unit test that fails when a given Layout has a Layout
itself.
IntroductionLayoutRazorTests.Simple_Nested_Layout_Example()
Corrected Razor Nested Layout test
pre-INCR to v3.9.49 - setup for vNext
Added support for Nested Razor Layouts

Updated the RazorPageResolver ResolveAndExecuteRazorPage function to
recursively render layouts until it finds one with no RazorPage Layout
value assigned.
add separate modified build-local for local CI
keep task, comment operation
Merge pull request #711 from pwhe23/master

Added support for Razor Nested Layouts
Add StripLinesAndWhitespace and convert tabs to spaces
Store the continue url in the session for use after Facebook authentication

After authenticating using the Facebook OAuth provider the user is not
properly redirected to the Continue url (if it was supplied). This
stores the Continue url in the session before making the authentication
call to Facebook.
Merge pull request #712 from kkolstad/master

Facebook will respect Auth.Continue after authentication
Revert "Store the continue url in the session for use after Facebook authentication"

This reverts commit c964f47c8f8d5b6094c4992bbb7d53e76807f04d.
Add missing eot, ttf, wof content-types
fix typo
Merge remote-tracking branch 'origin/master'
Resolved issue with partial content support fixes #713
Failing razor test shows page is executed even though redirect was returned
Merge pull request #717 from jeffgabhart/issue/razor-redirect

Failing razor test shows page is executed even though redirect was returned
Merge pull request #715 from theonlylawislove/master

Pull request for bug 713
Added new StringBuilderLog for capturing logs in a shared StringBuilder
Make RazorFormat more extensible to fix #718