Fix to cookie parsing algorithm in RequestHeaders
Adjust cookie parse fix to make it more tolerant.

- Made the algorithm more tolerant of malformed cookies
- Added a test to cover the fix (which currently does pass).
Added SSVE support for conditional on @Current inside @Each
Added SSVE support for conditionals on ViewBag
Fixed SSVE throwing when conditional property on viewbag is null
Added static content convention extensions
disposed the template resources after using them
Adds client certificate to testing request.
Removes testing only contructor on Request
Adds a testing certificate to the resources
Adds functions to browser to add certificate

-the embeded one
-from byes
-from store
Use TryGetValue when getting RemoteEndpointMessageProperty
Update session only is value is changed
Preserve inner exception. Otherwise there's no way to get any information about the exception that happened!
Merge branch 'master' of https://github.com/NancyFx/Nancy
Tabify.
Sorted out registrations for the validation projects
Disabled auto-registration in the validation demo
Updated csproj files
Cleaning up bits and bobs for consistency