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/env/ui/bargraph.lua	Tue Feb 02 00:31:06 2010 +0100
     1.2 +++ b/env/ui/bargraph.lua	Sat Feb 20 22:10:31 2010 +0100
     1.3 @@ -1,21 +1,33 @@
     1.4  function ui.bargraph(args)
     1.5 +  local text = ""
     1.6 +  for i, bar in ipairs(args.bars) do
     1.7 +    if #text > 0 then
     1.8 +      text = text .. " / "
     1.9 +    end
    1.10 +    text = text .. tostring(bar.value)
    1.11 +  end
    1.12    ui.container{
    1.13      attr = {
    1.14 -      class = "bargraph",
    1.15 +      class = args.class or "bargraph",
    1.16 +      title = tostring(text)
    1.17      },
    1.18      content = function()
    1.19 +      local at_least_one_bar = false
    1.20        for i, bar in ipairs(args.bars) do
    1.21          if bar.value > 0 then
    1.22 +          at_least_one_bar = true
    1.23            local value = bar.value * args.width / args.max_value
    1.24            ui.container{
    1.25              attr = {
    1.26                style = "width: " .. tostring(value) .. "px; background-color: " .. bar.color .. ";",
    1.27 -              title = tostring(bar.value)
    1.28              },
    1.29              content = function() slot.put(" ") end
    1.30            }
    1.31          end
    1.32        end
    1.33 +      if not at_least_one_bar then
    1.34 +        slot.put(" ")
    1.35 +      end
    1.36      end
    1.37    }
    1.38  end