Add 'exception_type' field to Incidents.

Signed-off-by: Dhananjay Nakrani <dhananjaynakrani@gmail.com>
Make server accept php error incidents.

Signed-off-by: Dhananjay Nakrani <dhananjaynakrani@gmail.com>
Add backward compatibility. Server now accepts incidents even if 'exception_type' is not set (case for older versions of PMA). It considers such incidents to be 'js' errors.

Signed-off-by: Dhananjay Nakrani <dhananjaynakrani@gmail.com>
Show 'Error Type' in individual error report.

Signed-off-by: Dhananjay Nakrani <dhananjaynakrani@gmail.com>
Fix failing tests. Modify the expected beahvior of testcases.

Signed-off-by: Dhananjay Nakrani <dhananjaynakrani@gmail.com>