e-asTTle fixes

In order to allow the import you must first make the student in the import file match exactly with the existing record for the student. The error tells us how the First and Last names were specified on the record in e-asTTle:
1. Find the student in the Student section of the AST file. Alter the first_name or last_name fields to be in line with the other record.
2. Import the file (a warning message is generated stating that the student already exists in a different School, this can be ignored).
3. In e-asTTle, search for the student through the Manage Existing Students screen and click ‘Change’ to bring up the Change Student screen. Here you can manually update the student to match the details originally specified in the .ast file.