Switch Bar Graphs to Line Graphs

[aep7128]

Since the crawler's gonna run more than once a day now, it doesn't make sense to use bar graphs with every bar being a 'day'. I suggested maybe just adding the times for these dates, but now the graphs look like this:

Was thinking maybe we could do line graphs instead, let's see if there's anything from ngx-charts that we could use, if not we can use a different tool/library if it makes things easier.

[Madrugaur]

@aep7128 Charts as line graphs