[BUG] Dendro crashes when trying to backup a large project

[NelsonPereira1991]

Dendro Version if known (or site URL)

https://github.com/feup-infolab/dendro/tree/machine-plus-human-identifiers

Dendro crashes if a user tries to backup a large project, and while the project is being downloaded the user tries to navigate into any folder of the project.

Please describe the expected behaviour

The user should be able to do any dendro operation even if a large project is being backed up.

Please describe the actual behaviour

Dendro crashes

What steps can be taken to reproduce the issue?

Create a complex project in Dendro (the zip generated from the backup should be at least 200MB in size). Then try to backup the project. While the project is being downloaded try to navigate into a folder of the project.

Possible ways to fix the problem (programmers)