fix specs-listing in CVWidgetMSEditor

Signed-off-by: nuss <st9fan@gmail.com>
CVWidgetMSEditor: trying to find a better way for naming specs whose minval, maxval etc. have been after having been selected from the editors list

Signed-off-by: nuss <st9fan@gmail.com>
fix mapping if a newly spec selected has zero-crossing and previous mapping was \linexp or \expexp -> set mapping to \linlin automatically

Signed-off-by: nuss <st9fan@gmail.com>