Rename maintenance.rb -> danbooru_maintenance.rb.

Fixes random test failures caused by ambiguous constant lookup issues
(the `Maintenance` module name was used in multiple conflicting places).

app/logical/danbooru_maintenance.rb

@@ -0,0 +1,46 @@
+module DanbooruMaintenance
+  module_function
+
+  def hourly
+    UploadErrorChecker.new.check!
+  rescue Exception => exception
+    rescue_exception(exception)
+  end
+
+  def daily
+    ActiveRecord::Base.connection.execute("set statement_timeout = 0")
+    PostPruner.new.prune!
+    Upload.where('created_at < ?', 1.day.ago).delete_all
+    Delayed::Job.where('created_at < ?', 45.days.ago).delete_all
+    PostVote.prune!
+    CommentVote.prune!
+    ApiCacheGenerator.new.generate_tag_cache
+    PostDisapproval.prune!
+    ForumSubscription.process_all!
+    TagAlias.update_cached_post_counts_for_all
+    PostDisapproval.dmail_messages!
+    Tag.clean_up_negative_post_counts!
+    SuperVoter.init!
+    TokenBucket.prune!
+    TagChangeRequestPruner.warn_all
+    TagChangeRequestPruner.reject_all
+    Ban.prune!
+    ActiveRecord::Base.connection.execute("vacuum analyze") unless Rails.env.test?
+  rescue Exception => exception
+    rescue_exception(exception)
+  end
+
+  def weekly
+    ActiveRecord::Base.connection.execute("set statement_timeout = 0")
+    UserPasswordResetNonce.prune!
+    ApproverPruner.prune!
+    TagRelationshipRetirementService.find_and_retire!
+  rescue Exception => exception
+    rescue_exception(exception)
+  end
+
+  def rescue_exception(exception)
+    DanbooruLogger.log(exception)
+    raise exception
+  end
+end