Warning notification when a recalculated region has been removed

After implementation of UGENE-3233 it became possible to recalculate values of qualifiers on modification of a sequences.

However, when it is not possible to modify the region in in the qualifier (e.g. a big corresponding region was deleted in the sequence), the qualifier is not currently modified. It is just ignored.

It is required to add a "Warning" notification with the detailed report. The report must list:

• All qualifiers that have not been changed.
• Additional details about the qualifiers, i.e. the annotation name and so on.
• You may also describe the reason, why the qualifiers were not deleted.