Change Source Code links to GitHub
Currently on the Downloads page Source Code links go to a separate page where it suggest to go to GitHub and also provides a few archives. Maybe all Source Code links should point just to a particular GitHub repository instead?
Also, currently trying to download Smack source it gives Openfire source for some reason. Same happens with Tinder and other projects. It's a bit of a mess now.
Some projects miss such link and it would be easier to add it, if it just points to GutHub (Spark, etc.).
Flow already proposed a PR doing that for Smack https://github.com/igniterealtime/IgniteRealtime-Website/pull/124
All links replaced, added missing ones, removed source files listing from the Source page.