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 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/env/util/html_rss_head.lua	Thu Apr 15 19:58:25 2010 +0200
     1.3 @@ -0,0 +1,3 @@
     1.4 +function util.html_rss_head(args)
     1.5 +  slot.put_into("html_head", '<link rel="alternate" type="application/rss+xml" title="' .. encode.html(args.title) .. '" href="' .. encode.url{ module = args.module, view = args.view, id = args.id, params = args.params } .. '">')
     1.6 +end