Log-transformed upload doesn't work

[maxkfranz]

Describe the bug
A clear and concise description of what the bug is.

Some intermediate users upload log-transformed data instead of raw counts. They don't know which to upload, and some already had log-transformed data.

To Reproduce
Steps to reproduce the behavior:

1. Go to enrichementmap.org
2. Click on Get Started
3. Upload log-transformed data
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

It should work the same as if you uploaded raw counts, or the user needs to know that the file upload must be raw counts.