Disable 'Save changes' button if input is empty, fixes #6351
Created by: Razer6
What does this MR do?
This PR deactivates the save button of a note, if the input is empty (similar as creating a note). Additionally, it changes the class of the Choose File
button to be the size as when creating a note
Why was this MR needed?
Currently it's possible to edit a comment to be empty.
What are the relevant issue numbers / Feature requests?
This PR fixes #6351
Screenshots
Before
After
@jvanbaarsen Can you take a look?