Feature: When copying a module, keep leading underscore

[pamtbaau]

When opening a module and copying it, the modal dialog allows for editing the fields.

• When entering the "title" field, the leading underscore is removed. This might lead to confusing situations for novice users.
• Also, the user is allowed to remove the underscore manually which might also lead to confusing situations for novice users.

Screencapture:

Feature request:

• When copying a module and editing the title, keep the leading underscore for the filename.
• Like when creating a module, hide the underscore from the "folder" field in the modal dialog.
• Prevent the user from removing the underscore