"Can't find a row in alignment" error when a sequence name contains space character(' ')

When an alignment is aligned with an external tool (e.g. ClustalO), method MSAUtils::compareRowsAfterAlignment(...) compares rows names of the original alignment and the result alignment. It returns an error when a sequence in the alignment contains space character in its name, therefore the task is finished with an error.

The fix should take into account not only space character, but all whitespace characters. Unit tests are required.