"Show incidents" links to wrong event ID

[sschiessl-bcp]

The "Show incidents" button of an event uses a wrong ID, it must be sluggified before, or id_string used

The button in the picture links to
incidents/2019-03-01T01:00:00Z-Basketball-NBA%20Regular%20Season
but it should link to either
incidents/2019-03-01t010000z__basketball__nba-regular-season
or
incidents/2019-03-01t010000z__basketball__nba-regular-season__oklahoma-city-thunder__philadelphia-76ers

[sschiessl-bcp]

@pbattu123