[chore] improved router logging, recovery and error handling (#705)

* move panic recovery to logging middleware, improve logging + panic recovery logic

Signed-off-by: kim <grufwub@gmail.com>

* remove dead code

Signed-off-by: kim <grufwub@gmail.com>

* remove skip paths code

Signed-off-by: kim <grufwub@gmail.com>

* re-enable log quoting

Signed-off-by: kim <grufwub@gmail.com>

* use human-friendly bytesize in logging body size

Signed-off-by: kim <grufwub@gmail.com>

* only disable quoting in debug builds

Signed-off-by: kim <grufwub@gmail.com>

* use logrus level instead of debug.DEBUG() to enable/disable quoting

Signed-off-by: kim <grufwub@gmail.com>

* shutup linter

Signed-off-by: kim <grufwub@gmail.com>

* fix instance tests

Signed-off-by: kim <grufwub@gmail.com>

* fix gin test contexts created with missing engine HTML renderer

Signed-off-by: kim <grufwub@gmail.com>

* add note regarding not logging query parameters

Signed-off-by: kim <grufwub@gmail.com>

* better explain 'DisableQuoting' logic

Signed-off-by: kim <grufwub@gmail.com>

* add license text

Signed-off-by: kim <grufwub@gmail.com>

internal/api/client/auth/auth_test.go

@@ -111,7 +111,7 @@ func (suite *AuthStandardTestSuite) TearDownTest() {
 func (suite *AuthStandardTestSuite) newContext(requestMethod string, requestPath string, requestBody []byte, bodyContentType string) (*gin.Context, *httptest.ResponseRecorder) {
 	// create the recorder and gin test context
 	recorder := httptest.NewRecorder()
-	ctx, engine := gin.CreateTestContext(recorder)
+	ctx, engine := testrig.CreateGinTestContext(recorder, nil)
 
 	// load templates into the engine
 	testrig.ConfigureTemplatesWithGin(engine, "../../../../web/template")