Friendlier appearance of quiz button on start page

Changed from .btn-danger to .btn-success which should make it green.
I have not yet set up the site locally so I'm coding in the dark here,
also changed from .fa-danger to .fa-success but not sure if that
makes any difference. :)

This was previously added to the user-pleasure branch, but I'm now
committing it to master directly after popular demand.
Merge pull request #133 from emilwall/master

Friendlier appearance of quiz button on start page -> master branch
Fixed so that the quiz results are encrypted
Merge branch 'master' of https://github.com/rasmushaglund/Partisk
Small icon fix
Merge branch 'master' of git://github.com/RikardNordstrom/Partisk into RikardNordstrom-master
Some fixes made to Rikards pull req
Added javascript for IE <= 8
Merge pull request #20 from rasmushaglund/master

pull