Duplicated Tasks

[Hagellach37]

For project -M56eeMCZ5VeOHjJN4Bx (and probably for other projects as well) there are duplicated tasks. These tasks have been part of two separate groups and thus have been mapped more often than required.

Due to this reason, the agg_results.geojson also has these tasks more than once. (I this file they appear 4-times...)

Fortunately, this is not a big problem in terms of the results. As an easy approach, we could just select one of the tasks and drop the others. We would still have at least 3 users per task.

Moreover, we need to investigate the following:

• why are duplicated tasks created, double check project creation workflow
• why do the duplicated tasks appear 4-times in aggregated results?

[Hagellach37]

this should be tackled when refactoring the code for #374