bug ajax.js responseHandler: another "cannot read property"

Signed-off-by: Marc Delisle <marc@infomarc.info>
bug tbl_structure.js "cannot read property"

Signed-off-by: Marc Delisle <marc@infomarc.info>
Sticky column headers were getting wrongly aligned, http://stackoverflow.com/questions/24635110/phpmyadmin-column-headers-move-in-table-when-you-scroll

Signed-off-by: Atul Pratap Singh <atulpratapsingh05@gmail.com>
4.2.8.1 release

Signed-off-by: Marc Delisle <marc@infomarc.info>
Translated using Weblate (Korean)

Currently translated at 84.6% (2343 of 2768)

[ci skip]
Merge remote-tracking branch 'origin/QA_4_2' into QA_4_2
4.2.10-dev

Signed-off-by: Marc Delisle <marc@infomarc.info>