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/app/main/member_image/show.lua	Sun Apr 04 22:05:11 2010 +0200
     1.2 +++ b/app/main/member_image/show.lua	Thu Apr 15 19:58:25 2010 +0200
     1.3 @@ -11,11 +11,10 @@
     1.4    exit()
     1.5  end
     1.6  
     1.7 -print('Content-type: ' .. record.content_type .. '\n')
     1.8 +assert(record.content_type, "No content-type set for image.")
     1.9 +
    1.10 +slot.set_layout(nil, record.content_type)
    1.11  
    1.12  if record then
    1.13 -  io.stdout:write(record.data)
    1.14 -else
    1.15 +  slot.put_into("data", record.data)
    1.16  end
    1.17 -
    1.18 -exit()