IncompatibIlity with Real Time Collaboration extension

[b4shful]

Apologies I don't have time to write a full report here, but essentially when using the jupyter-collaboration extension, it seems to prepend "RTC" to the folder name, however this isn't the case for the actual filesystem.

Hence, when trying to extract an archive in a session that has real time collaboration on, it looks in the wrong place giving:

FileNotFoundError: [Errno 2] No such file or directory: '/home/jovyan/RTC:neuro4ml/cw1-peer-assessment/all.zip'

When actually it should just use the path (without "RTC:")

'/home/jovyan/neuro4ml/cw1-peer-assessment/all.zip'

The result is that clicking "Extract Archive" does nothing, and the error is reported in the backend logs.