Allow .log Files to be Imported

[mockjv]

Is your feature request related to a problem? Please describe.
Currently the app limits imported files to .txt, .json and .clef but our apps still use the .log extension.

Describe the solution you'd like
Just need to add more potential extensions to the mix.

Describe alternatives you've considered
Might even consider simply checking to see if the file itself is valid JSON, and attempt to load it vs. explicitly enforcing what extensions are allowed. I also completely understand/respect if this introduces other complexities in your JSON parsing.

Additional context
N/A

[warrenbuckley]

Fixed in PR from @MonkeyJumps