Rename tree/tree_file partial to tree/blob

app/views/tree/_blob.html.haml

@@ -0,0 +1,42 @@
+.file_holder
+  .file_title
+    %i.icon-file
+    %span.file_name
+      = blob.name.force_encoding('utf-8')
+      %small #{blob.mode}
+    %span.options
+      .btn-group.tree-btn-group
+        = link_to "raw", project_blob_path(@project, @id), class: "btn very_small", target: "_blank"
+        = link_to "history", project_commits_path(@project, @id), class: "btn very_small"
+        = link_to "blame", project_blame_path(@project, @id), class: "btn very_small"
+        = link_to "edit", edit_project_tree_path(@project, @id), class: "btn very_small"
+  - if blob.text?
+    - if gitlab_markdown?(blob.name)
+      .file_content.wiki
+        = preserve do
+          = markdown(blob.data)
+    - elsif markup?(blob.name)
+      .file_content.wiki
+        = raw GitHub::Markup.render(blob.name, blob.data)
+    - else
+      .file_content.code
+        - unless blob.empty?
+          %div{class: current_user.dark_scheme ? "black" : "white"}
+            = preserve do
+              = raw blob.colorize(options: { linenos: 'True'})
+        - else
+          %h4.nothing_here_message Empty file
+
+  - elsif blob.image?
+    .file_content.image_file
+      %img{ src: "data:#{blob.mime_type};base64,#{Base64.encode64(blob.data)}"}
+
+  - else
+    .file_content.blob_file
+      %center
+        = link_to project_blob_path(@project, @id) do
+          %div.padded
+            %br
+            = image_tag "download.png", width: 64
+            %h3
+              Download (#{blob.mb_size})