Display config file path on admin panel (#2030)

options/locale/locale_en-US.ini

@@ -1238,6 +1238,7 @@ config.server_config = Server Configuration
 config.app_name = Application Name
 config.app_ver = Application Version
 config.app_url = Application URL
+config.custom_conf = Configuration File Path
 config.domain = Domain
 config.offline_mode = Offline Mode
 config.disable_router_log = Disable Router Log

routers/admin/admin.go

@@ -198,6 +198,7 @@ func Config(ctx *context.Context) {
 	ctx.Data["PageIsAdmin"] = true
 	ctx.Data["PageIsAdminConfig"] = true
 
+	ctx.Data["CustomConf"] = setting.CustomConf
 	ctx.Data["AppUrl"] = setting.AppURL
 	ctx.Data["Domain"] = setting.Domain
 	ctx.Data["OfflineMode"] = setting.OfflineMode

templates/admin/config.tmpl

@@ -12,6 +12,8 @@
 				<dd>{{AppName}}</dd>
 				<dt>{{.i18n.Tr "admin.config.app_ver"}}</dt>
 				<dd>{{AppVer}}{{AppBuiltWith}}</dd>
+				<dt>{{.i18n.Tr "admin.config.custom_conf"}}</dt>
+				<dd>{{.CustomConf}}</dd>
 				<dt>{{.i18n.Tr "admin.config.app_url"}}</dt>
 				<dd>{{.AppUrl}}</dd>
 				<dt>{{.i18n.Tr "admin.config.domain"}}</dt>