Secondary Navbar

[David Convent <davconvent gmail com>]

Hi list,

Sorry I've been close to missing last month.
I saw recent checkins in the gnometheme product for implementing the  
secondary navigation bar for the plone theme.

I know this is still a work in progress but I already have a few  
remarks to address.
I also hope I'll have a few hours this afternoon/evening/week to help  
improving it:

- in 'gnometheme/skins/gnome_custom_templates/global_sections.pt':

  I see some redundant code that might be expensive (define  
selected_tabs and selected_portal_tab)
  this code should reside in a wrapper to make it called only once.

- in 'gnometheme/skins/gnome_scripts/secondaryNavBar.py':

  Calculating the secondary nav bar with restrictedTraverse() and  
getFolderContents() is also very expensive.
  Another problem wit that method is that we'll have to reinvent the  
way the second navbar will play with default
  pages and linguaplone (when needed).
  The second navbar should be done from a catalog query.
  Ideally, I think we could get inspired by the way the navtree  
works to adapt it to our needs.
  I'll try to strart that work ASAP to show the way.