Migrate existing Cronjobs to Whenever

(closes #452)
Use tiles with protocol relative URLs, avoid mixed content
Merge pull request #454 from hacken-in/452-migrate-cronjobs

Migrate existing Cronjobs to Whenever
Merge pull request #478 from til/openstreetmap-ssl-tiles

Use tiles with protocol relative URLs, avoid mixed content
Temporary hotfix for shellycloud-forwarded hostname (refs #477)
Move OmniAuth host to production.rb
Merge pull request #485 from hacken-in/master

Last-Merge-Of-The-Day Release