#4502 (ok 4.0.10.2) Self-XSS in enum value editor

[Madhura Jayaratne]

Steps: In table structure page, add a new column, insert '' as column name, chose enum as column type and click on "Edit ENUM/SET values" link.

Affected versions: 4.0.x, 4.1.x, 4.2.x

Problematic line: function.js L2693 (in QA_4_2) "title = PMA_messages.enum_columnVals.replace(/%s/, '"' + decodeURIComponent(colname) + '"');