* Continued work on improving post view templates

* Added statistics-based estimator for related tag calculator
* Fleshed out IpBan class based on changes to Danbooru 1.xx

app/helpers/posts_helper.rb

@@ -0,0 +1,27 @@
+module PostsHelper
+  def image_dimensions(post, current_user)
+    if post.is_image?
+      "(#{post.image_width_for(current_user)}x#{post.image_height_for(current_user)})"
+    else
+      ""
+    end
+  end
+  
+  def image_dimension_menu(post, current_user)
+    html = ""
+    file_size = number_to_human_size(post.file_size)
+    original_dimensions = post.is_image? ? "(#{post.image_width}x#{post.image_height})" : nil
+    large_dimensions = post.has_large? ? "(#{post.large_image_width}x#{post.large_image_height})" : nil
+    medium_dimensions = post.has_medium? ? "(#{post.medium_image_width}x#{post.medium_image_height})" : nil
+    current_dimensions = "(#{post.image_width_for(current_user)}x#{post.image_height_for(current_user)})"
+    html << %{<menu type="context" data-user-default="<%= current_user.default_image_size %>">}
+    html << %{<li>#{file_size} #{current_dimensions}</li>}
+    html << %{<ul>}
+    html << %{<li id="original">#{file_size} #{original_dimensions}</li>}
+    html << %{<li id="medium">#{file_size} #{medium_dimensions}</li>} if medium_dimensions
+    html << %{<li id="large">#{file_size} #{large_dimensions}</li>} if large_dimensions
+    html << %{</ul>}
+    html << %{</menu>}
+    html.html_safe
+  end
+end