fix Piranha.csproj for correct hintpath to MarkdownSharp package
fix security assertion for IsDraft assignment in MVC BaseController
Merge pull request #238 from kcamp/mvc_post_draft_fix

Fix for MVC post "preview draft" request
fix issue where logProvider is lazy-loaded but not returned correctly on the initial call
Merge pull request #240 from kcamp/fix_log_provider_config

fix issue where logProvider is lazy-loaded but not returned correctly
refactor local providers for parameterized constructors/chaining to promote extensibility/subclassing without code redundancy
Merge pull request #241 from kcamp/local_provider_ctor_refactor

Refactor local media providers for parameterized constructors/chaining
Merge remote-tracking branch 'origin/master' into 2.2.0
Updated NuGet package resolver.