Merge branch '25429-fix-awkward-wording-in-cherry-pick-and-revert-errors' into 'master'

Resolve "Fix awkward wording in "cherry-pick" and "revert" errors."

## What does this MR do?

Fixes a poorly worded error message as well as some other minor bugs I encountered while investigating #21812.

## Are there points in the code the reviewer needs to double check?

Should be pretty straight forward.

## Why was this MR needed?

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [ ] ~~[Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added~~
- [ ] ~~[Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)~~
- [ ] ~~API support added~~
- Tests
  - [ ] ~~Added for this feature/bug~~
  - [ ] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Originally a part of #21812
Closes #25429

See merge request !7981

app/services/commits/change_service.rb

@@ -35,7 +35,7 @@ module Commits
         success
       else
         error_msg = "Sorry, we cannot #{action.to_s.dasherize} this #{@commit.change_type_title(current_user)} automatically.
-                     It may have already been #{action.to_s.dasherize}, or a more recent commit may have updated some of its content."
+                     A #{action.to_s.dasherize} may have already been performed with this #{@commit.change_type_title(current_user)}, or a more recent commit may have updated some of its content."
         raise ChangeError, error_msg
       end
     end

app/views/projects/commit/_change.html.haml

@@ -13,7 +13,7 @@
         %a.close{href: "#", "data-dismiss" => "modal"} ×
         %h3.page-title== #{label} this #{commit.change_type_title(current_user)}
       .modal-body
-        = form_tag send("#{type.underscore}_namespace_project_commit_path", @project.namespace, @project, commit.id), method: :post, remote: false, class: 'form-horizontal js-#{type}-form js-requires-input' do
+        = form_tag send("#{type.underscore}_namespace_project_commit_path", @project.namespace, @project, commit.id), method: :post, remote: false, class: "form-horizontal js-#{type}-form js-requires-input" do
           .form-group.branch
             = label_tag 'target_branch', target_label, class: 'control-label'
             .col-sm-10
@@ -23,12 +23,11 @@
               - if can?(current_user, :push_code, @project)
                 .js-create-merge-request-container
                   .checkbox
-                    - nonce = SecureRandom.hex
-                    = label_tag "create_merge_request-#{nonce}" do
-                      = check_box_tag 'create_merge_request', 1, true, class: 'js-create-merge-request', id: "create_merge_request-#{nonce}"
+                    = label_tag do
+                      = check_box_tag 'create_merge_request', 1, true, class: 'js-create-merge-request', id: nil
                       Start a <strong>new merge request</strong> with these changes
               - else
-                = hidden_field_tag 'create_merge_request', 1
+                = hidden_field_tag 'create_merge_request', 1, id: nil
           .form-actions
             = submit_tag label, class: 'btn btn-create'
             = link_to "Cancel", '#', class: "btn btn-cancel", "data-dismiss" => "modal"