Add "View Differences" button above wiki and repository revisions table (#12221).

Patch by Go MAEDA.


git-svn-id: https://svn.redmine.org/redmine/trunk@17492 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/repositories/_revisions.html.erb

@@ -20,6 +20,8 @@ end %>
        :repository_id => @repository.identifier_param, :path => to_path_param(path)},
       :method => :get
      ) do %>
+<% show_diff = revisions.size > 1 %>
+<%= submit_tag(l(:label_view_diff), :name => nil) if show_diff %>
 <table class="list changesets">
 <thead><tr>
 <th>#</th>
@@ -30,7 +32,6 @@ end %>
 <th><%= l(:field_comments) %></th>
 </tr></thead>
 <tbody>
-<% show_diff = revisions.size > 1 %>
 <% line_num = 1 %>
 <% revisions.each do |changeset| %>
 <tr class="changeset">

app/views/wiki/history.html.erb

@@ -5,6 +5,8 @@
 <%= form_tag({:controller => 'wiki', :action => 'diff',
               :project_id => @page.project, :id => @page.title},
               :method => :get) do %>
+<% show_diff = @versions.size > 1 %>
+<%= submit_tag l(:label_view_diff), :class => 'small' if show_diff %>
 <table class="list wiki-page-versions">
 <thead><tr>
     <th>#</th>
@@ -16,7 +18,6 @@
     <th></th>
 </tr></thead>
 <tbody>
-<% show_diff = @versions.size > 1 %>
 <% line_num = 1 %>
 <% @versions.each do |ver| %>
 <tr class="wiki-page-version">