Real-time editing of issue and merge request title
- This should be considered after these are implemented: https://gitlab.com/gitlab-org/gitlab-ce/issues/25051 + https://gitlab.com/gitlab-org/gitlab-ce/issues/25049
Like google docs, real time collaboration & autosave. Can maybe be done with
- Consider titles only, so that we don't have to worry about more complicated formatting.
- Consider descriptions separately: https://gitlab.com/gitlab-org/gitlab-ce/issues/44162.