Dice pool display problems for actors with "." in their names

[Sparky939]

Description
Actors with fits '.' in their names causes the dice pool to not show dice added to the pool

To Reproduce
Steps to reproduce the behavior:

1. Create a character actor with a '.' in their name
2. Add some traits
3. Attempt to add a trait to the pool
4. See error

Note this hasn't been checked with other actor types or other symbols, but I suspect is a string sanitisation issue.