Added missing strings to prepare the tags page for internationalization

app/views/projects/tags/new.html.haml

@@ -33,7 +33,7 @@
         = s_('TagsPage|Optionally, add a message to the tag.')
   %hr
   .form-group
-    = label_tag :release_description, 'Release notes', class: 'control-label'
+    = label_tag :release_description, s_('TagsPage|Release notes'), class: 'control-label'
     .col-sm-10
       = render layout: 'projects/md_preview', locals: { url: preview_markdown_path(@project), referenced_users: true } do
         = render 'projects/zen', attr: :release_description, classes: 'note-textarea', placeholder: s_('TagsPage|Write your release notes or drag files here...'), current_text: @release_description
@@ -41,6 +41,6 @@
       .help-block
         = s_('TagsPage|Optionally, add release notes to the tag. They will be stored in the GitLab database and displayed on the tags page.')
   .form-actions
-    = button_tag 'Create tag', class: 'btn btn-create', tabindex: 3
-    = link_to 'Cancel', project_tags_path(@project), class: 'btn btn-cancel'
+    = button_tag s_('TagsPage|Create tag'), class: 'btn btn-create', tabindex: 3
+    = link_to s_('TagsPage|Cancel'), project_tags_path(@project), class: 'btn btn-cancel'
 %script#availableRefs{ type: "application/json" }= @project.repository.ref_names.to_json.html_safe