Merge branch '24161-non-intuitive-buttons-for-import-sources-in-administrator-settings-enable-disable' into 'master'

Import sources buttons to checkboxes

## What does this MR do?

Swaps the `/application_settings` `Import Sources` buttons to checkboxes.

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

## Why was this MR needed?

## Screenshots (if relevant)

![2016-11-19_14.42.39](/uploads/5bf53ecb54765bd80ab275714208ee9a/2016-11-19_14.42.39.gif)

## Does this MR meet the acceptance criteria?

- [x] [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
  - [x] 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?


Closes #24161

See merge request !7598

app/helpers/application_settings_helper.rb

@@ -67,14 +67,14 @@ module ApplicationSettingsHelper
   def import_sources_checkboxes(help_block_id)
     Gitlab::ImportSources.options.map do |name, source|
       checked = current_application_settings.import_sources.include?(source)
-      css_class = 'btn'
-      css_class += ' active' if checked
+      css_class = checked ? 'active' : ''
       checkbox_name = 'application_setting[import_sources][]'
 
-      label_tag(checkbox_name, class: css_class) do
+      label_tag(name, class: css_class) do
         check_box_tag(checkbox_name, source, checked,
                       autocomplete: 'off',
-                      'aria-describedby' => help_block_id) + name
+                      'aria-describedby' => help_block_id,
+                      id: name.tr(' ', '_')) + name
       end
     end
   end

app/views/admin/application_settings/_form.html.haml

@@ -31,10 +31,8 @@
     .form-group
       = f.label :import_sources, class: 'control-label col-sm-2'
       .col-sm-10
-        - data_attrs = { toggle: 'buttons' }
-        .btn-group{ data: data_attrs }
-          - import_sources_checkboxes('import-sources-help').each do |source|
-            = source
+        - import_sources_checkboxes('import-sources-help').each do |source|
+          .checkbox= source
         %span.help-block#import-sources-help
           Enabled sources for code import during project creation. OmniAuth must be configured for GitHub
           = link_to "(?)", help_page_path("integration/github")

changelogs/unreleased/24161-non-intuitive-buttons-for-import-sources-in-administrator-settings-enable-disable.yml

@@ -0,0 +1,4 @@
+---
+title: Changed import sources buttons to checkboxes
+merge_request: 7598
+author: Luke "Jared" Bennett