Duplicate events in W measurement

[tpmccauley]

In the W measurement we need to handle the following events, showing both side and end views. Probably a good first step is to convert the csv to json, where we have a list of files for each event id. Then iterate over events in a template and display.

Checking for duplicate ids in W-challenge.csv
24: ['t8664_4071end.gif', 't8664_4071side.gif']
31: ['m8702_3780end.gif', 'm8702_3780side.gif']
53: ['t8664_4859end.gif', 't8664_4859side.gif']
99: ['t8664_4257end.gif', 't8664_4257side.gif']
134: ['t8664_3092end.gif', 't8664_3092side.gif']
145: ['t8664_3211end.gif', 't8664_3211side.gif']
160: ['t8664_3350end.gif', 't8664_3350side.gif']
171: ['t8664_3049end.gif', 't8664_3049side.gif']
267: ['t8664_3210end.gif', 't8664_3210side.gif']
289: ['t8664_3407end.gif', 't8664_3407side.gif']
305: ['m8702_8738end.gif', 'm8702_8738side.gif']