Bug ZK-2160: menupopup shifts position when timer event occurs
refix Bug ZK-2382: Can't select specific date when daylight saving time started at 12:00:00 AM
Merge pull request #106 from jerrywell/master

refix Bug ZK-2382: Can't select specific date when daylight saving time ...
add release date
1. Fixed jsdoc issue copied from master branch
release 6.5.7
update version to 6.5.8
Merge remote-tracking branch 'upstream/6.5'
Bug ZK-2398: Sortable tree missing sort icon on tree column
refix Bug ZK-2382: Can't select specific date when daylight saving time started at 12:00:00 AM
Bug ZK-2377: scrollbar will jump back after scroll to bottom-most position
Merge branch 'B70-ZK-2377' of https://github.com/hanhsu/zk
Bug ZK-2395: Tree header and content misaligned if contains invisible columns
Merge pull request #109 from jerrywell/ZK-2395

Bug ZK-2395: Tree header and content misaligned if contains invisible co...
Bug ZK-2401: Navigate textboxes in listheader by tab key break frozen scroll behavior
ZK-2397: Session timeout denote twice if sending two au requests
Merge remote-tracking branch 'upstream/6.5'
Merge branch 'master' of https://github.com/jerrywell/zk
* Bug ZK-2407: XSS Vulnerability in textbox.setValue()
* Refixed for ZK-2116
Merge remote-tracking branch 'upstream/6.5'