The "Select Muscles" Pop-up won't reopen

[har0ke]

When closing the "Select Muscles" pop-up it won't open a second time. You'd have to re-enter the editing view.

[brodeurlv]

Hi har0ke, please follow the template when entering an issue.
I succeed to reproduce the issue as you forgot to mention that you have to save before :

Step to reproduce :

1. In the Exercise view, click on Muscles

2. Select some muscles

3. Click on the Save button

4. click on Muscles => the dialog doesn't open.

[brodeurlv]

Fixed with #130