Update clipboard_button text: Copy commit SHA to clipboard

app/views/projects/commit/_commit_box.html.haml

 .page-content-header
   .header-main-content
     %strong
-    = clipboard_button(clipboard_text: @commit.id)
+    = clipboard_button(clipboard_text: @commit.id, title: "Copy commit SHA to clipboard")
     = @commit.short_id
     %span.hidden-xs authored
     #{time_ago_with_tooltip(@commit.authored_date)}

app/views/projects/commits/_commit.html.haml

@@ -36,6 +36,6 @@
     .table-list-cell.commit-actions.hidden-xs
       - if commit.status(ref)
         = render_commit_status(commit, ref: ref)
-      = clipboard_button(clipboard_text: commit.id)
+      = clipboard_button(clipboard_text: commit.id, title: "Copy commit SHA to clipboard")
       = link_to commit.short_id, namespace_project_commit_path(project.namespace, project, commit), class: "commit-short-id btn btn-transparent"
       = link_to_browse_code(project, commit)

app/views/projects/tree/_tree_content.html.haml

@@ -8,7 +8,7 @@
             .pull-left Last commit
             .last-commit.hidden-sm.pull-left
               %small.light
-                = clipboard_button(clipboard_text: @commit.id)
+                = clipboard_button(clipboard_text: @commit.id, title: "Copy commit SHA to clipboard")
                 = link_to @commit.short_id, namespace_project_commit_path(@project.namespace, @project, @commit), class: "monospace"
                 = time_ago_with_tooltip(@commit.committed_date)
                 = @commit.full_title

changelogs/unreleased-ee/clipboard-button-commit-sha-ee.yml

+---
+title: 'Copy commit SHA to clipboard'
+merge_request: 1066