reference global logrus (#274)

* reference logrus' global logger instead of passing and storing a logger reference everywhere

* always directly use global logrus logger instead of referencing an instance

* test suites should also directly use the global logrus logger

* rename gin logging function to clarify that it's middleware

* correct comments which erroneously referenced removed logger parameter

* setting log level for tests now uses logrus' exported type instead of the string value, to guarantee error isn't possible

testrig/oauthserver.go

@@ -25,7 +25,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/oauth"
 )
 
-// NewTestOauthServer returns an oauth server with the given db, and the default test logger.
+// NewTestOauthServer returns an oauth server with the given db
 func NewTestOauthServer(db db.DB) oauth.Server {
-	return oauth.New(context.Background(), db, NewTestLog())
+	return oauth.New(context.Background(), db)
 }