[HIGH] Create/Edit Assignment. SQL exception when trying to save assignment

[staeron]

STEPS:

• Try to Create/Edit Assignment
• Set grading type to "Numeric"
• For field threshold set the following value: "s"
• Change grading type to "Pass/Fail"
• Click "Create"/"Update" button

RESULT:

Unable to execute UPDATE statement [UPDATE assignments SET threshold=:p1 WHERE assignments.id=:p2] [wrapped: SQLSTATE[HY000]: General error: 1366 Incorrect integer value: 's' for column 'threshold' at row 1]

[staeron]

Fixed