weibo: normalize weibo urls in artist entries.

Normalize all Weibo URLs in artist entries to one of these forms:

* https://www.weibo.com/u/5399876326
* https://www.weibo.com/p/1005055399876326
* https://www.weibo.com/chengziyou666

script/fixes/base.rb

@@ -3,9 +3,11 @@ require_relative "../../config/environment"
 # Run a block of code in a transaction, and only commit it after confirmation.
 def with_confirmation(&block)
   ApplicationRecord.transaction do
-    yield
+    CurrentUser.scoped(User.system, "127.0.0.1") do
+      yield
 
-    print "Commit? (yes/no): "
-    raise "abort" unless STDIN.readline.chomp == "yes"
+      print "Commit? (yes/no): "
+      raise "abort" unless STDIN.readline.chomp == "yes"
+    end
   end
 end