Some classes in vue_shared were used only by boards, so they were
moved to the boards directory.

Closes #30902

The objects where passed in the wrong order so would actually cause a timeout eventually. Also changed to used random numbers so this error would of been more obvious

Closes #29329

When dragging an issue to a list that it already exists in it was previously not removing the label for the list it was moving from. This changes that to make that API call.

Closes #28484

Added some error handling which reverts the frontend data changes &
notifies the user

expand remaining non-explicit eslint-disable blocks and factor out globals when no-undef encountered