Update to target milestore 0.8.0 - breaking change was the rename of …

…cache back plate to backplane MichaCo#44

removing WithSystemRuntimeDefaultCacheHandle and changing the empty W…

…ithSystemRuntimeCacheHandle to use default instead. Makse much more sense

Fix Mono build

fixing references to devci

Upgrade to newer redis client version

Fixed redis Count and server getter

fixing mono build. Mocking HttpContext.Current doesn't work on Mono f…

…or some reason (see https://bugzilla.xamarin.com/show_bug.cgi?id=24308)

Added another unity injection example with the new CacheFactory overl…

…oads.

Fixing mono replacement project.json versions

Cleanup

Changes BaseCacheHandle expiration handling. Fixes MichaCo#1