Use feeds to make the website feel alive

[da2x]

Ideas as discussed on IRC:

• Pull https://github.com/ViennaRSS/vienna-rss/releases.atom to automate blog posts for new releases.
• Pull https://github.com/ViennaRSS/vienna-rss/commits/master.atom (client side with xmlhttprequests?) to display a project pulse “8 commits in the last 9 days.” (from number of entries + days since oldest entry)
• Download button should point to https://github.com/ViennaRSS/vienna-rss/releases/latest rather than Sourceforge.