Release 0.12.0 support

Github currently doesn't seem to support a simple way to fetch the download-URL for release-assets (like the binary archive for graylog2-server). That's the reason I chose a simple approach with "hard-coding" the download URI. To avoid further confusion I did the same for the web-interface.

301-redirects from downloads.graylog2.org to the actual downloads at Amazon-S3 would allow auto-generation of those pesky download-links.


I also updated the apache2 virtual-host port to 80 to provide a better default behaviour.