Initialize Result using just servletContextInjector.
Minor change of getAll() methods
Register action results by result type, too. Extracted ActionResult as an iterface.
added test for issue #78
Exception messages rewritten
Added @RenderWith Madvoc annotation. Results may be defined in returned objects, too. Closes #75
Removed @Action#result as not really needed.
if http client set Head is "HTTP/1.1",Server will keep connection persistent,but not set response head: "Connection: keep-alive"!
Fixed and changed keep-alive behavior (fixes #77)