Introduce account document to user document

An account document is attached to a user document if an account of the
user is on the server. It may be missing if the user is on a remote server.

src/api/endpoints/posts/categorize.ts

@@ -12,7 +12,7 @@ import Post from '../../models/post';
  * @return {Promise<any>}
  */
 module.exports = (params, user) => new Promise(async (res, rej) => {
-	if (!user.is_pro) {
+	if (!user.account.is_pro) {
 		return rej('This endpoint is available only from a Pro account');
 	}
 

src/api/endpoints/posts/create.ts

@@ -390,7 +390,7 @@ module.exports = (params, user: IUser, app) => new Promise(async (res, rej) => {
 			});
 
 		// この投稿をWatchする
-		if (user.settings.auto_watch !== false) {
+		if (user.account.settings.auto_watch !== false) {
 			watch(user._id, reply);
 		}
 

src/api/endpoints/posts/polls/vote.ts

@@ -100,7 +100,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 		});
 
 	// この投稿をWatchする
-	if (user.settings.auto_watch !== false) {
+	if (user.account.settings.auto_watch !== false) {
 		watch(user._id, post);
 	}
 });

src/api/endpoints/posts/reactions/create.ts

@@ -116,7 +116,7 @@ module.exports = (params, user) => new Promise(async (res, rej) => {
 		});
 
 	// この投稿をWatchする
-	if (user.settings.auto_watch !== false) {
+	if (user.account.settings.auto_watch !== false) {
 		watch(user._id, post);
 	}
 });