Still need to figure out how to export the race and roster data to a csv as shown in the mockup below.  I've left a place for this piece of code to be written here: [Line 57 - app/components/roster/RaceSetup.js](https://github.com/opensprints/opensprints-electron/blob/master/app/components/roster/RaceSetup.js#L57) ### Questions - [ ] Do we want to export Finished, Deleted or All Races? - [x] How do we [save a file using Electron](http://stackoverflow.com/questions/38067298/saving-files-locally-with-electron)? - [x] Can we use the default system dialog? - [ ] What will our data look like in a csv?