fully implement ugoira js player, upgrade jquery and jquery-ui

app/models/post.rb

@@ -95,7 +95,7 @@ class Post < ActiveRecord::Base
 
     def large_file_url
       if has_large?
-        "/data/sample/#{file_path_prefix}#{Danbooru.config.large_image_prefix}#{md5}.jpg"
+        "/data/sample/#{file_path_prefix}#{Danbooru.config.large_image_prefix}#{md5}.#{large_file_ext}"
       else
         file_url
       end
@@ -146,7 +146,7 @@ class Post < ActiveRecord::Base
     end
 
     def has_preview?
-      is_image? || is_video?
+      is_image? || is_video? || is_ugoira?
     end
 
     def has_dimensions?
@@ -168,7 +168,7 @@ class Post < ActiveRecord::Base
     end
 
     def has_large?
-      is_image? && image_width.present? && image_width > Danbooru.config.large_image_width
+      is_ugoira? || (is_image? && image_width.present? && image_width > Danbooru.config.large_image_width)
     end
 
     def has_large

app/models/upload.rb

@@ -355,7 +355,6 @@ class Upload < ActiveRecord::Base
       self.file_path = destination_path
       download = Downloads::File.new(source, destination_path, :is_ugoira => has_ugoira_tag?)
       download.download!
-      self.source = download.source
       ugoira_service.load(download.data)
     end
   end