Feature/another look at logging (#303)

* #212 - hacked websockets proxy together

* faffing around

* #212 hacking away :(

* #212 websockets proxy middleware working

* #212 map when for webockets working

* #212 some test refactor

* #212 temp commit

* #212 websockets proxy working, tests passing...need to do some tidying and write docs

* #212 more code coverage

* #212 docs for websockets

* #212 updated readme

* #212 tidying up after websockets refactoring

* #212 tidying up after websockets refactoring

* #212 tidying up after websockets refactoring

* changing logging levels and logging like ms reccomends with structured data rather than strings

* more faffing

* more fafin

* #287 ocelot logger now only takes strings as it did take params then just turned them to strings, misleading, unit tests for logger and diagnosticlogger

* #287 errors now logged as they happen

* #287 more detail for logs requested in issue

* #287 tidy up

* #287 renamed

* #287 always log context id

* #287 fixed me being an idiot

* #287 removed crap websockets unit test that isnt a unit test

* #287 removed crap websockets unit test that isnt a unit test

test/Ocelot.ManualTest/Program.cs

@@ -37,11 +37,11 @@ namespace Ocelot.ManualTest
                          {
                              x.WithDictionaryHandle();
                          })
-                         .AddOpenTracing(option =>
+                       /*  .AddOpenTracing(option =>
                          {
                              option.CollectorUrl = "http://localhost:9618";
                              option.Service = "Ocelot.ManualTest";
-                         })
+                         })*/
                          .AddAdministration("/administration", "secret");
                 })
                 .ConfigureLogging((hostingContext, logging) =>