Add empty koding state; check permissions for project buttons

app/views/projects/_home_panel.html.haml

@@ -28,10 +28,9 @@
           .project-clone-holder
             = render "shared/clone_panel"
 
-        = render 'projects/buttons/download', project: @project, ref: @ref
-        = render 'projects/buttons/dropdown'
-        = render 'shared/notifications/button', notification_setting: @notification_setting
-
-        - if current_user
-          = render "projects/buttons/koding"
+        - if current_user && can?(current_user, :download_code, @project)
+          = render 'projects/buttons/download', project: @project, ref: @ref
+          = render 'projects/buttons/dropdown'
+          = render 'shared/notifications/button', notification_setting: @notification_setting
+          = render 'projects/buttons/koding'
           = render 'shared/members/access_request_buttons', source: @project

app/views/projects/buttons/_koding.html.haml

-- if koding_enabled? && current_user && can_push_branch?(@project, @project.default_branch)
-  - if @repository.koding_yml
-    = link_to koding_project_url(@project), class: 'btn project-action-button inline', target: '_blank' do
-      Run in IDE (Koding)
-  - else
-    = link_to add_koding_stack_path(@project), class: 'btn project-action-button inline' do
-      Set up Koding
+- if koding_enabled? && current_user && @repository.koding_yml && can_push_branch?(@project, @project.default_branch)
+  = link_to koding_project_url(@project), class: 'btn project-action-button inline', target: '_blank' do
+    Run in IDE (Koding)

app/views/projects/show.html.haml

@@ -65,6 +65,9 @@
           %li.missing
             = link_to add_special_file_path(@project, file_name: '.gitlab-ci.yml') do
               Set up CI
+        - if koding_enabled? && @repository.koding_yml.blank?
+          %li.missing
+            = link_to 'Set Up Koding', add_koding_stack_path(@project)
 
   - if @repository.commit
     .project-last-commit{ class: container_class }

changelogs/unreleased/leave-project-btn.yml

 ---
-title: Move access project button to header
-merge_request: 
-author: 
+title: Move all action buttons to project header
+merge_request:
+author: