Scraper for trips includes rows with malformed dates

The script imports trips (~8 rows) with malformed dates containing ",", e.g. "Apr 11, 2014", see attached image:

Actual result: The script imports trips with malformed dates, which corrupts the whole csv.

Expected result: The script produces a valid csv.

Quick fix: Manually deleted the misformed rows in scope of fix-misformed-rows-in-trips MR