Merge branch 'temporarily-revert-appending-templates-before-long-term-ux-fix' into 'master'

Stop appending templates - Temporary fix

## What does this MR do?

This is the temporary fix for #23315. This stops the templates appending to any existing text.

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

## Why was this MR needed?

Temporary fix for #23315.

## Screenshots (if relevant)

![2016-10-21_21.58.55](/uploads/ba54d89fcb2fb9cf99ff24c8623ae413/2016-10-21_21.58.55.gif)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry 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
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

See merge request !7050

app/assets/javascripts/blob/template_selector.js.es6

@@ -68,14 +68,10 @@
       // To be implemented on the extending class
       // e.g.
       // Api.gitignoreText item.name, @requestFileSuccess.bind(@)
-      requestFileSuccess(file, { skipFocus, append } = {}) {
+      requestFileSuccess(file, { skipFocus } = {}) {
         const oldValue = this.editor.getValue();
         let newValue = file.content;
 
-        if (append && oldValue.length && oldValue !== newValue) {
-          newValue = oldValue + '\n\n' + newValue;
-        }
-
         this.editor.setValue(newValue, 1);
         if (!skipFocus) this.editor.focus();
 
@@ -99,4 +95,3 @@
 
     global.TemplateSelector = TemplateSelector;
   })(window.gl || ( window.gl = {}));
-

app/assets/javascripts/templates/issuable_template_selector.js.es6

@@ -32,24 +32,22 @@
         this.currentTemplate = currentTemplate;
         if (err) return; // Error handled by global AJAX error handler
         this.stopLoadingSpinner();
-        this.setInputValueToTemplateContent(true);
+        this.setInputValueToTemplateContent();
       });
       return;
     }
 
-    setInputValueToTemplateContent(append) {
+    setInputValueToTemplateContent() {
       // `this.requestFileSuccess` sets the value of the description input field
-      // to the content of the template selected. If `append` is true, the
-      // template content will be appended to the previous value of the field,
-      // separated by a blank line if the previous value is non-empty.
+      // to the content of the template selected.
       if (this.titleInput.val() === '') {
         // If the title has not yet been set, focus the title input and
         // skip focusing the description input by setting `true` as the
         // `skipFocus` option to `requestFileSuccess`.
-        this.requestFileSuccess(this.currentTemplate, {skipFocus: true, append});
+        this.requestFileSuccess(this.currentTemplate, {skipFocus: true});
         this.titleInput.focus();
       } else {
-        this.requestFileSuccess(this.currentTemplate, {skipFocus: false, append});
+        this.requestFileSuccess(this.currentTemplate, {skipFocus: false});
       }
       return;
     }

spec/features/projects/issuable_templates_spec.rb

@@ -77,7 +77,7 @@ feature 'issuable templates', feature: true, js: true do
     scenario 'user selects "bug" template' do
       select_template 'bug'
       wait_for_ajax
-      preview_template("#{prior_description}\n\n#{template_content}")
+      preview_template("#{template_content}")
       save_changes
     end
   end