rubocop: fix various Rubocop warnings.

app/logical/moderator/dashboard/queries/artist.rb

@@ -3,7 +3,8 @@ module Moderator
     module Queries
       class Artist < ::Struct.new(:user, :count)
         def self.all(min_date, max_level)
-          ::ArtistVersion.joins(:updater)
+          ::ArtistVersion
+            .joins(:updater)
             .where("artist_versions.created_at > ?", min_date)
             .where("users.level <= ?", max_level)
             .group(:updater)

app/logical/moderator/dashboard/queries/comment.rb

@@ -3,7 +3,8 @@ module Moderator
     module Queries
       class Comment < ::Struct.new(:comment, :count)
         def self.all(min_date, max_level)
-          ::CommentVote.joins(comment: [:creator])
+          ::CommentVote
+            .joins(comment: [:creator])
             .where("comments.score < 0")
             .where("comment_votes.created_at > ?", min_date)
             .where("users.level <= ?", max_level)

app/logical/moderator/dashboard/queries/note.rb

@@ -3,7 +3,8 @@ module Moderator
     module Queries
       class Note < ::Struct.new(:user, :count)
         def self.all(min_date, max_level)
-          ::NoteVersion.joins(:updater)
+          ::NoteVersion
+            .joins(:updater)
             .where("note_versions.created_at > ?", min_date)
             .where("users.level <= ?", max_level)
             .group(:updater)

app/logical/moderator/dashboard/queries/post_appeal.rb

@@ -3,7 +3,8 @@ module Moderator
     module Queries
       class PostAppeal
         def self.all(min_date)
-          ::Post.joins(:appeals).includes(:uploader, :flags, appeals: [:creator])
+          ::Post
+            .joins(:appeals).includes(:uploader, :flags, appeals: [:creator])
             .deleted
             .where("post_appeals.created_at > ?", min_date)
             .group(:id)

app/logical/moderator/dashboard/queries/upload.rb

@@ -3,7 +3,8 @@ module Moderator
     module Queries
       class Upload < ::Struct.new(:user, :count)
         def self.all(min_date, max_level)
-          ::Post.joins(:uploader)
+          ::Post
+            .joins(:uploader)
             .where("posts.created_at > ?", min_date)
             .where("users.level <= ?", max_level)
             .group(:uploader)

app/logical/moderator/dashboard/queries/wiki_page.rb

@@ -3,7 +3,8 @@ module Moderator
     module Queries
       class WikiPage < ::Struct.new(:user, :count)
         def self.all(min_date, max_level)
-          ::WikiPageVersion.joins(:updater)
+          ::WikiPageVersion
+            .joins(:updater)
             .where("wiki_page_versions.created_at > ?", min_date)
             .where("users.level <= ?", max_level)
             .group(:updater)

app/logical/moderator/ip_addr_search.rb

@@ -62,7 +62,7 @@ module Moderator
     end
 
     def add_row(sums, counts)
-      sums.merge!(counts) { |key, oldcount, newcount| oldcount + newcount }
+      sums.merge!(counts) { |_key, oldcount, newcount| oldcount + newcount }
     end
 
     def add_row_id(sums, counts)