Improve the security contact page

Added link to the GPG key and made security into a separate section to
make it more discoverable.

Signed-off-by: Tomas Sedovic <tomas@sedovic.cz>
Merge pull request #59 from tomassedovic/security-info

Improve the security contact page
Remove outdated Factory content - Point to Factory upstream page
added project overview section
Merge pull request #62 from aeolusproject/bug/factory_webpage

Remove outdated Factory content - Point to Factory upstream page
Merge pull request #63 from tzumainn/master

Updated release template to add product overview section
fixed Tim description
Merge pull request #64 from tzumainn/master

Fixed Tim description
publish Release Cabal minutes
Merge pull request #65 from giulivo/master

publish Release Cabal minutes
Adds Jarda's Takeoff 2013 presentation about Alchemy
Merge pull request #68 from n1zyy/jarda-takeoff

Adds Jarda's Takeoff 2013 presentation about Alchemy