Fixed warnings bug which does not display data if there is an inf value data point

[simmonsj330]

Fixes #1906
This bug stems from trying to calculate the Interest Coverage Ratio but the calculation return inf if it does not have the variables needed for the calculation, which occurs if the website we are scraping the data from does not have certain data points. This PR addresses this by adding functionality to the lambda_int_or_round_float function by identifying if there is an 'inf' and denoting it as '~' when viewing table.

Due to the function being within the helper_funcs.py file there was no testing run.

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