(*) Added parameterless constructor to the ViewModelBase.
(*) Added 'using' to support correct xml-documentation in NETFX_CORE.
Added references to the new files in Catel.Core.WIN81 project.
Merge pull request #12 from Taggersoft/develop

Developing for WIN81
Updated Fody to the latest version
(+) CTL-167 Implemented SafeDirectoryModuleCatalog in Extensions.Prism because the default Prism directory catalog is not safe
Disable documentation generation in finalbuilder
CTL-168 Added support of buffering exception in Exception Handling
Merge remote-tracking branch 'origin/develop' into develop
(*) CTL-168 Added exception handling code to all projects using Caitlyn
(*) Improved GetFromCacheOrFetch performance avoiding the serialization of multiples threads calls with different keys
Merge branch 'develop' of https://github.com/Catel/Catel into develop
Small performance improvements in CacheStorage