Adds a delete link on the wiki index (#26579).

git-svn-id: http://svn.redmine.org/redmine/trunk@16916 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/wiki/date_index.html.erb

 <%= link_to l(:label_wiki_page_new), new_project_wiki_page_path(@project), :remote => true, :class => 'icon icon-add' %>
 <% end %>
 <%= watcher_link(@wiki, User.current) %>
+<% if User.current.allowed_to?(:manage_wiki, @project) %>
+<%= link_to l(:button_delete), {:controller => 'wikis', :action => 'destroy', :id => @project}, :class => 'icon icon-del' %>
+<% end %>
 </div>
 
 <h2><%= l(:label_index_by_date) %></h2>

app/views/wiki/index.html.erb

 <%= link_to l(:label_wiki_page_new), new_project_wiki_page_path(@project), :remote => true, :class => 'icon icon-add' %>
 <% end %>
 <%= watcher_link(@wiki, User.current) %>
+<% if User.current.allowed_to?(:manage_wiki, @project) %>
+<%= link_to l(:button_delete), {:controller => 'wikis', :action => 'destroy', :id => @project}, :class => 'icon icon-del' %>
+<% end %>
 </div>
 
 <h2><%= l(:label_index_by_title) %></h2>

app/views/wikis/destroy.html.erb

 <%= form_tag({:controller => 'wikis', :action => 'destroy', :id => @project}) do %>
   <%= hidden_field_tag "confirm", 1 %>
   <%= submit_tag l(:button_delete) %>
-  <%= link_to l(:button_cancel), settings_project_path(@project, :tab => 'wiki') %>
+  <%= link_to l(:button_cancel), :back %>
 <% end %>
+