Dynamic interface using XMLHttpRequests, and many other changes

Bugfixes:
- Only allow voting on admitted initiatives
- Repaired issue search
- Don't display delegations for closed issues on member page
- Don't show revoke link in initiative, when issue is already half_frozen
- Localization for voting JavaScript
- Display author of suggestions

Disclosure of voting data after voting is finished:
- Possibility to inspect every ballot including preferences
- Show number of voters preferring one initiative to another initiative

Interface behaviour changes:
- Reversed default order of drafts
- Default order of suggestions changed
- Show new drafts of initiatives only once per day in timeline

Accessibility:
- Barrier-free voting implemented
- POST links are now accessible without JavaScript
- Changed gray for unsatisfied supporters in bar graph to a lighter gray

Other interface improvements:
- Optical enhancements
- Dynamic interface using XMLHttpRequests
- Show usage terms in about section
- Show own membership in area listing
- Show uninformed supporters greyed out and marked with yellow question mark
- Warning box in non-admitted initiatives
- When voted, don't display voting notice and change label of voting link
- Show object counts in more tabulator heads
- Enlarged member statement input field

Miscellaneous:
- Code cleanup
- Added README file containing installation instructions
- Use new WebMCP function ui.filters{...} instead of own ui.filter and ui.order functions

     1.1 --- a/model/member.lua	Tue Feb 02 00:31:06 2010 +0100
     1.2 +++ b/model/member.lua	Sat Feb 20 22:10:31 2010 +0100
     1.3 @@ -311,10 +311,26 @@
     1.4    return success
     1.5  end
     1.6  
     1.7 -function Member.object:get_setting_by_key(key)
     1.8 +function Member.object:get_setting(key)
     1.9 +  return Setting:by_pk(app.session.member.id, key)
    1.10 +end
    1.11 +
    1.12 +function Member.object:get_setting_value(key)
    1.13 +  local setting = Setting:by_pk(app.session.member.id, key)
    1.14 +  if setting then
    1.15 +    return setting.value
    1.16 +  end
    1.17  end
    1.18  
    1.19  function Member.object:set_setting(key, value)
    1.20 +  local setting = self:get_setting(key)
    1.21 +  if not setting then
    1.22 +    setting = Setting:new()
    1.23 +    setting.member_id = app.session.member_id
    1.24 +    setting.key = key
    1.25 +  end
    1.26 +  setting.value = value
    1.27 +  setting:save()
    1.28  end
    1.29  
    1.30  function Member.object:get_setting_maps_by_key(key)