Contextual quick search (#3263).

Eg. when viewing issues, the quick search will search issues only.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2943 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/layouts/base.rhtml

@@ -31,6 +31,7 @@
 <div id="header">
     <div id="quick-search">
         <% form_tag({:controller => 'search', :action => 'index', :id => @project}, :method => :get ) do %>
+        <%= hidden_field_tag(controller.default_search_scope, 1, :id => nil) if controller.default_search_scope %>
         <%= link_to l(:label_search), {:controller => 'search', :action => 'index', :id => @project}, :accesskey => accesskey(:search) %>:
         <%= text_field_tag 'q', @question, :size => 20, :class => 'small', :accesskey => accesskey(:quick_search) %>
         <% end %>