incorporated new kitemarks from Adrian

these new images were created in response to @agentGav
Merge branch 'improvements-page' into new-kitemarks
Added larger logos
Tweak to size of badges on about page
Adding in Raw Level badge
Merge remote-tracking branch 'origin' into new-kitemarks

Conflicts:
	config/locales/en.yml
Merge remote-tracking branch 'origin' into new-kitemarks

Conflicts:
	config/locales/en.yml
move sidebar trigger so it will actually do something when it first loads
proxy suveryor#create across to our own version, so development questionnaires also get a certificate
support basic as raw for the certificate badges
rewrote level styles with parametric mixin
added badge image to background of certificate
allow level test to correctly name datasets
corrected badge paths
changed text under logo to black
added favicon.ico

fixes #285
fix for display of errors when logging in
styling on modal login
Merge pull request #275 from theodi/new-kitemarks

incorporated new kitemarks etc
Trivial change

to trigger a deploy