Use ISO-8601 date format

[hainest]

I couldn't find official documentation, but all resources point to this SO post:
https://stackoverflow.com/questions/30933741/jekyll-cant-sort-collection-by-date

Corrected version of #26.

@vsoch I updated the import date format to match the one used in the Google sheet (d/m/yyyy). Is it safe for me to test the importer locally?

[vsoch]

It should be OK to run locally - the Google sheet that is used for the update is grabbed progammatically via a csv url from Google sheets. What you might want to do is make a copy of the current _data/jobs.yaml in case you want to restore or redo tests. Although the script (if I remember) will generate a previous jobs file in the same directory. The update will write to tmp and then use that file to replace the current jobs, so it will update.

[hainest]

@vsoch I was able to successfully run scripts/update_jobs.py against ec5fcd3.

[vsoch]

Woot! OK Let's go in for round 2 then.. LEEEEROOOOY.... JAAAAEEENKINS!