Set RUN_MODE prod by default (#13765) (#13767)

* Set RUN_MODE prod by default (#13765)

I think it's a bad default to have "dev" as the default run mode which
enables debugging and now also disables HTTP caching. It's better to
just default to a value suitable for general deployments.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* flip default in checkRunMode

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

routers/init.go

@@ -43,12 +43,14 @@ import (
 
 func checkRunMode() {
 	switch setting.Cfg.Section("").Key("RUN_MODE").String() {
-	case "prod":
+	case "dev":
+		git.Debug = true
+	case "test":
+		git.Debug = true
+	default:
 		macaron.Env = macaron.PROD
 		macaron.ColorLog = false
 		setting.ProdMode = true
-	default:
-		git.Debug = true
 	}
 	log.Info("Run Mode: %s", strings.Title(macaron.Env))
 }