Remove PPC job ad from the site

We’re no longer hiring for this position
Merge pull request #114 from gocardless/remove-ppc-job-ad

Remove PPC job ad from the site
Remove web designer job ad

No longer recruiting for this position via our site
Merge pull request #116 from gocardless/remove-web-designer-job-ad

Remove web designer job ad
Update restricted activities
Add redirect
Merge pull request #117 from gocardless/update-restricted-activities

Update restricted activities
Merge branch 'dev' into new-splash-pages