Error saving justification

[Jeremy Hopkins]

When a teacher sets “Require justification” to “Hidden from students” the feedback left by students is lost / not saved.

The screen recording below illustrates this:

https://livecoventryac-my.sharepoint.com/:v:/g/personal/ac1216_coventry_ac_uk/EfQ1Zr3Wj4tIj_e3LlluqEQB1HlZSeSlq-uEyBgdRJteJw?e=xJ0KST

[Frédéric Massart]

Justifications were not saved when set to be hidden. Fixes #24

→ <<cset 575ceaa5f016>>

[Frédéric Massart]

Thank you for spotting this. It has been fixed.