Overlapping tasks of the same type in the same location shouldn't cause conflict

[thibaultmol]

I was having an issue just like the user in issue #74
Where I was signed up for two video tasks after each other, which overlap. But because both of the tasks are assigned to me, it shouldn't cause the warning

[Danyc0]

Can you link me to your two overlapping tasks?

[thibaultmol]

https://volunteers.fosdem.org/task/1274/
https://volunteers.fosdem.org/task/1275/