Carefully review validation of annotations qualifiers

All inputs of text data, especially annotations qualifiers must be carefully validated.

Examples:
1. When adding a qualifier using Panoramic View, it is not allowed to add qulifier with name "@!+)()_#(#)~^@&". However, when editing qualifier in annotations view, this is allowed.
2. After such qualifier is created, add qulifier with name "a a ", after that save genbank, remove it and open again. There is no such qualifier (it is attached to the previous one).
3. Through the "Edit qualifier" action in annotations view it is possible to create qualifier named as a single space