Added a link to add a new category when creating or editing an issue.

The user is prompted for the category name. The new category is created and the drop-down list updated using an ajax call.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@648 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/issues/edit.rhtml

@@ -8,7 +8,11 @@
 <p><label><%=l(:field_status)%></label> <%= @issue.status.name %></p>
 <p><%= f.select :priority_id, (@priorities.collect {|p| [p.name, p.id]}), :required => true %></p>
 <p><%= f.select :assigned_to_id, (@issue.project.members.collect {|m| [m.name, m.user_id]}), :include_blank => true %></p>
-<p><%= f.select :category_id, (@project.issue_categories.collect {|c| [c.name, c.id]}), :include_blank => true %></p>
+<p><%= f.select :category_id, (@project.issue_categories.collect {|c| [c.name, c.id]}), :include_blank => true %>
+<%= prompt_to_remote(l(:label_issue_category_new),
+                     l(:label_issue_category_new), 'category[name]', 
+                     {:controller => 'projects', :action => 'add_issue_category', :id => @project},
+                     :class => 'small') if authorize_for('projects', 'add_issue_category') %></p>
 </div>
 
 <div class="splitcontentright">