Several bugfixes (getpic.c, accepted but canceled issues, ...); Listing of available policies

- Bugfixes in fastpath/getpic.c (related to crashes since alpha5)
- Respect Content-Types of images in database
(needs database update, as Content-Type was incorrectly stored by previous versions)
- Typo fixed in help messages
- RSS-Feed (currently only after manual authentication while session is valid)
- Listing of available policies
- German translation fixed: "gebe" -> "gib" (Imperativ)
- Bugfixes related to issues which had been accepted but canceled afterwards
- Prohibit creation of initiatives in disabled areas or with disabled policies

     1.1 --- a/model/initiative.lua	Sun Apr 04 22:05:11 2010 +0200
     1.2 +++ b/model/initiative.lua	Thu Apr 15 19:58:25 2010 +0200
     1.3 @@ -157,3 +157,18 @@
     1.4    end
     1.5    return name
     1.6  end
     1.7 +
     1.8 +function Initiative.object_get:initiator_names()
     1.9 +  local members = Member:new_selector()
    1.10 +    :join("initiator", nil, "initiator.member_id = member.id")
    1.11 +    :add_where{ "initiator.initiative_id = ?", self.id }
    1.12 +    :add_where{ "initiator.accepted" }
    1.13 +    :exec()
    1.14 +
    1.15 +  local member_names = {}
    1.16 +  for i, member in ipairs(members) do
    1.17 +    member_names[#member_names+1] = member.name
    1.18 +  end
    1.19 +  return member_names
    1.20 +end
    1.21 +