Improve project new item dropdown

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/projects/_home_panel.html.haml

@@ -23,6 +23,6 @@
         = link_to archive_namespace_project_repository_path(@project.namespace, @project, ref: @ref, format: 'zip'), class: 'btn', rel: 'nofollow' do
           %i.fa.fa-download
-    = render 'projects/dropdown'
+    = render 'projects/buttons/dropdown'
   = render "shared/clone_panel"

app/views/projects/_dropdown.html.haml → app/views/projects/buttons/_dropdown.html.haml

 - if current_user
   %span.dropdown
     %a.dropdown-toggle.btn.btn-new{href: '#', "data-toggle" => "dropdown"}
-      %i.fa.fa-bars
+      %i.fa.fa-plus
     %ul.dropdown-menu
       - if @project.issues_enabled && can?(current_user, :create_issue, @project)
         %li
@@ -26,7 +26,6 @@
             New git branch
         %li
           = link_to new_namespace_project_tag_path(@project.namespace, @project) do
-            %i.fa.fa-tag
             New git tag