Move from btn-success to btn-confirm in projects directory

app/views/projects/_commit_button.html.haml

 .form-actions
-  = button_tag 'Commit changes', id: 'commit-changes', class: 'gl-button btn btn-success js-commit-button  qa-commit-button'
+  = button_tag 'Commit changes', id: 'commit-changes', class: 'gl-button btn btn-confirm js-commit-button  qa-commit-button'
 
   = link_to 'Cancel', cancel_path,
             class: 'gl-button btn btn-default btn-cancel', data: {confirm: leave_edit_message}

app/views/projects/_customize_workflow.html.haml

@@ -5,4 +5,4 @@
     %p
       Get started with GitLab by enabling features that work best for your project. From issues and wikis, to merge requests and pipelines, GitLab can help manage your workflow from idea to production!
     - if can?(current_user, :admin_project, @project)
-      = link_to "Get started", edit_project_path(@project), class: "gl-button btn btn-success"
+      = link_to "Get started", edit_project_path(@project), class: "gl-button btn btn-confirm"

app/views/projects/_fork_suggestion.html.haml

@@ -5,6 +5,6 @@
       edit
     files in this project directly. Please fork this project,
     make your changes there, and submit a merge request.
-  = link_to 'Fork', nil, method: :post, class: 'js-fork-suggestion-button gl-button btn btn-grouped btn-inverted btn-success'
+  = link_to 'Fork', nil, method: :post, class: 'js-fork-suggestion-button gl-button btn btn-grouped btn-confirm-secondary'
   %button.js-cancel-fork-suggestion-button.gl-button.btn.btn-grouped{ type: 'button' }
     Cancel

app/views/projects/_invite_members.html.haml

@@ -4,5 +4,5 @@
   = s_('InviteMember|Invite your team')
 %p= s_('InviteMember|Add members to this project and start collaborating with your team.')
 = link_to s_('InviteMember|Invite members'), project_project_members_path(@project, sort: :access_level_desc),
-        class: 'gl-button btn btn-success gl-mb-8 gl-xs-w-full',
+        class: 'gl-button btn btn-confirm gl-mb-8 gl-xs-w-full',
         data: { track_event: 'click_button', track_label: 'invite_members_empty_project' }

app/views/projects/_new_project_fields.html.haml

@@ -62,5 +62,5 @@
           .option-description
             = s_('ProjectsNew|Allows you to immediately clone this project’s repository. Skip this if you plan to push up an existing repository.')
 
-= f.submit _('Create project'), class: "btn gl-button btn-success", data: { track_label: "#{track_label}", track_event: "click_button", track_property: "create_project", track_value: "" }
+= f.submit _('Create project'), class: "btn gl-button btn-confirm", data: { track_label: "#{track_label}", track_event: "click_button", track_property: "create_project", track_value: "" }
 = link_to _('Cancel'), dashboard_projects_path, class: 'btn gl-button btn-default btn-cancel', data: { track_label: "#{track_label}", track_event: "click_button", track_property: "cancel", track_value: "" }

app/views/projects/_readme.html.haml

@@ -24,4 +24,4 @@
         distributed with computer software, forming part of its documentation.
         GitLab will render it here instead of this message.
       %p
-        = link_to "Add Readme", @project.add_readme_path, class: 'btn btn-success'
+        = link_to "Add Readme", @project.add_readme_path, class: 'gl-button btn btn-confirm'

app/views/projects/edit.html.haml

@@ -23,7 +23,7 @@
       .js-project-permissions-form
       - if show_visibility_confirm_modal?(@project)
         = render "visibility_modal"
-      = f.submit _('Save changes'), class: "btn gl-button btn-success #{('js-confirm-danger' if show_visibility_confirm_modal?(@project))}", data: { qa_selector: 'visibility_features_permissions_save_button', check_field_name: ("project[visibility_level]" if show_visibility_confirm_modal?(@project)), check_compare_value: @project.visibility_level }
+      = f.submit _('Save changes'), class: "btn gl-button btn-confirm #{('js-confirm-danger' if show_visibility_confirm_modal?(@project))}", data: { qa_selector: 'visibility_features_permissions_save_button', check_field_name: ("project[visibility_level]" if show_visibility_confirm_modal?(@project)), check_compare_value: @project.visibility_level }
 
 %section.rspec-merge-request-settings.settings.merge-requests-feature.no-animate#js-merge-request-settings{ class: [('expanded' if expanded), ('hidden' if @project.project_feature.send(:merge_requests_access_level) == 0)], data: { qa_selector: 'merge_request_settings_content' } }
   .settings-header
@@ -37,7 +37,7 @@
     = form_for @project, html: { multipart: true, class: "merge-request-settings-form js-mr-settings-form" }, authenticity_token: true do |f|
       %input{ name: 'update_section', type: 'hidden', value: 'js-merge-request-settings' }
       = render 'projects/merge_request_settings', form: f
-      = f.submit _('Save changes'), class: "btn gl-button btn-success rspec-save-merge-request-changes", data: { qa_selector: 'save_merge_request_changes_button' }
+      = f.submit _('Save changes'), class: "btn gl-button btn-confirm rspec-save-merge-request-changes", data: { qa_selector: 'save_merge_request_changes_button' }
 
 = render_if_exists 'projects/merge_request_approvals_settings', expanded: expanded