Fix code overflow (#6914)

public/css/index.css

@@ -942,6 +942,7 @@ tbody.commit-list{vertical-align:baseline}
 .admin dl.admin-dl-horizontal dd{margin-left:275px}
 .admin dl.admin-dl-horizontal dt{font-weight:bolder;float:left;width:285px;clear:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
 .admin.config #test-mail-btn{margin-left:5px}
+.admin code,.admin pre{white-space:pre-wrap;word-wrap:break-word}
 .explore{padding-top:15px}
 .explore .navbar{justify-content:center;padding-top:15px!important;margin-top:-15px!important;margin-bottom:15px!important;background-color:#fafafa!important;border-width:1px!important}
 .explore .navbar .octicon{width:16px;text-align:center;margin-right:5px}

public/less/_admin.less

@@ -65,4 +65,10 @@
             margin-left: 5px;
         }
     }
+
+    code,
+    pre {
+        white-space: pre-wrap;
+        word-wrap: break-word;
+    }
 }

templates/admin/config.tmpl

@@ -254,7 +254,7 @@
 				<dt>{{.i18n.Tr "admin.config.session_provider"}}</dt>
 				<dd>{{.SessionConfig.Provider}}</dd>
 				<dt>{{.i18n.Tr "admin.config.provider_config"}}</dt>
-				<dd><code>{{if .SessionConfig.ProviderConfig}}{{.SessionConfig.ProviderConfig}}{{else}}-{{end}}</code></dd>
+				<dd><pre>{{if .SessionConfig.ProviderConfig}}{{.SessionConfig.ProviderConfig  | JsonPrettyPrint}}{{else}}-{{end}}</pre></dd>
 				<dt>{{.i18n.Tr "admin.config.cookie_name"}}</dt>
 				<dd>{{.SessionConfig.CookieName}}</dd>
 				<dt>{{.i18n.Tr "admin.config.gc_interval_time"}}</dt>