[deviantart] rename 'watch' option to 'auto-watch'

(#1466, #1757)

Similar reason as in e05a96db.
'watch' is already used by the WatchExtractor class.

docs/configuration.rst

@@ -1053,8 +1053,8 @@ Description
     or whenever your `cache file <cache.file_>`__ is deleted or cleared.
 
 
-extractor.deviantart.watch
---------------------------
+extractor.deviantart.auto-watch
+-------------------------------
 Type
     ``bool``
 Default

gallery_dl/extractor/deviantart.py

@@ -326,7 +326,7 @@ class DeviantartExtractor(Extractor):
             folder = dev["premium_folder_data"]
 
             if not has_access and folder["type"] == "watchers" and \
-                    self.config("watch"):
+                    self.config("auto-watch"):
                 if self.api.user_friends_watch(username):
                     has_access = True
                     self.log.info(

gallery_dl/extractor/oauth.py

@@ -220,7 +220,7 @@ class OAuthDeviantart(OAuthBase):
                 "client-secret", deviantart.DeviantartOAuthAPI.CLIENT_SECRET),
             "https://www.deviantart.com/oauth2/authorize",
             "https://www.deviantart.com/oauth2/token",
-            scope="browse",
+            scope="browse user.manage",
             cache=deviantart._refresh_token_cache,
         )