Refactor

- new: keyboard navigation works, even when forms are present
- new: loading indicator shows time left till next screen
- new: transition left/right using offscreen iframe
- new: design matches current local.ch a bit more
- js refactor and some re-org

![infoscreen_and_foz____src_infoscreen___python__and__volumes_docs_dropbox__local_ch__career_cv_todo_md__cv](https://cloud.githubusercontent.com/assets/7750/3045943/f10f271c-e122-11e3-8e02-07784a19c3bc.png)