Add i18n helpers to branch comparison view

app/views/projects/compare/_form.html.haml

@@ -5,22 +5,24 @@
         = link_to icon('exchange'), { from: params[:to], to: params[:from] }, class: 'commits-compare-switch has-tooltip btn btn-white', title: 'Swap revisions'
     .form-group.dropdown.compare-form-group.to.js-compare-to-dropdown
       .input-group.inline-input-group
-        %span.input-group-addon Source
+        %span.input-group-addon
+          = s_("CompareBranches|Source")
         = hidden_field_tag :to, params[:to]
         = button_tag type: 'button', title: params[:to], class: "form-control compare-dropdown-toggle js-compare-dropdown has-tooltip git-revision-dropdown-toggle", required: true, data: { refs_url: refs_project_path(@project), toggle: "dropdown", target: ".js-compare-to-dropdown", selected: params[:to], field_name: :to } do
-          .dropdown-toggle-text.str-truncated= params[:to] || 'Select branch/tag'
+          .dropdown-toggle-text.str-truncated= params[:to] || s_("CompareBranches|Select branch/tag")
       = render 'shared/ref_dropdown'
     .compare-ellipsis.inline ...
     .form-group.dropdown.compare-form-group.from.js-compare-from-dropdown
       .input-group.inline-input-group
-        %span.input-group-addon Target
+        %span.input-group-addon
+          = s_("CompareBranches|Target")
         = hidden_field_tag :from, params[:from]
         = button_tag type: 'button', title: params[:from], class: "form-control compare-dropdown-toggle js-compare-dropdown has-tooltip git-revision-dropdown-toggle", required: true, data: { refs_url: refs_project_path(@project), toggle: "dropdown", target: ".js-compare-from-dropdown", selected: params[:from], field_name: :from } do
-          .dropdown-toggle-text.str-truncated= params[:from] || 'Select branch/tag'
+          .dropdown-toggle-text.str-truncated= params[:from] || s_("CompareBranches|Select branch/tag")
       = render 'shared/ref_dropdown'
      
-    = button_tag "Compare", class: "btn btn-create commits-compare-btn"
+    = button_tag s_("CompareBranches|Compare"), class: "btn btn-create commits-compare-btn"
     - if @merge_request.present?
-      = link_to "View open merge request", project_merge_request_path(@project, @merge_request), class: 'prepend-left-10 btn'
+      = link_to s_("CompareBranches|View open merge request"), project_merge_request_path(@project, @merge_request), class: 'prepend-left-10 btn'
     - elsif create_mr_button?
-      = link_to "Create merge request", create_mr_path, class: 'prepend-left-10 btn'
+      = link_to s_("CompareBranches|Create merge request"), create_mr_path, class: 'prepend-left-10 btn'

app/views/projects/compare/index.html.haml

@@ -3,22 +3,16 @@
 - page_title "Compare"
 
 %div{ class: container_class }
+  %h3.page-title
+    = _("Compare Git revisions")
   .sub-header-block
-    Compare Git revisions.
-    %br
-    Choose a branch/tag (e.g.
-    = succeed ')' do
+    - example_master = capture_haml do
       %code.ref-name master
-    or enter a commit SHA (e.g.
-    = succeed ')' do
+    - example_sha = capture_haml do
       %code.ref-name 4eedf23
-    to see what's changed or to create a merge request.
+    = (s_("CompareBranches|Choose a branch/tag (e.g. %{master}) or enter a commit (e.g. %{sha}) to what's changed or to create a merge request.") % { master: example_master, sha: example_sha }).html_safe
     %br
-    Changes are shown as if the
-    %b source
-    revision was being merged into the
-    %b target
-    revision.
+    = (s_("ComparBranches|Changes are shown as if the <b>source</b> revision was being merged into the <b>target</b> revision.")).html_safe
 
   .prepend-top-20
     = render "form"

app/views/projects/compare/show.html.haml

 - @no_container = true
-- add_to_breadcrumbs "Compare Revisions", project_compare_index_path(@project)
+- add_to_breadcrumbs _("Compare Revisions"), project_compare_index_path(@project)
 - page_title "#{params[:from]}...#{params[:to]}"
 
 %div{ class: container_class }
@@ -13,12 +13,13 @@
     .light-well
       .center
         %h4
-          There isn't anything to compare.
+          = s_("CompareBranches|There isn't anything to compare.")
         %p.slead
           - if params[:to] == params[:from]
-            %span.ref-name= params[:from]
-            and
-            %span.ref-name= params[:to]
-            are the same.
+            - sourceBranch = capture_haml do
+              %span.ref-name= params[:from]
+            - targetBranch = capture_haml do
+              %span.ref-name= params[:to]
+            = (s_("CompareBranches|%{source_branch} and %{target_branch} are the same.") % { source_branch: sourceBranch, target_branch: targetBranch }).html_safe
           - else
-            You'll need to use different branch names to get a valid comparison.
+            = s_("CompareBranches|You'll need to use different branch names to get a valid comparison.")