- switched Email recipient field to R
- made Email play nice with embedded knitr figures (using a custom image upload function and PHPmailer), though there is one problem: mailinator which we use for testing, strips away all images and other funny business. should we, by default, send the email to the sender?
- made skipifs use R. Caching evaluated skipifs in item_factory (per page)
- refactored openCPU and RunUnit models
- translated all_widgets example table to english
- added two new fields to DB scheme, to allow for the day when we use knitr in survey item and choice labels