Merge pull request #38 from dekstop/master

Link 'join today' on the cost of hacking page
Rewrite members area to try and reduce queries
Merge branch 'master' of github.com:londonhackspace/hackspace-foundation-sites
Link Bitcoin donation address to to blockchain.info

Linking to the blockchain.info page for the Bitcoin donation address makes it easier for people using mobile wallets to donate - there's a QR code to scan.
Merge pull request #39 from sde1000/patch-1

Link Bitcoin donation address to blockchain.info
adding 'cost of hacking' link to signup page