fix issue filter fail after sort
fix lazy lable disappear when value is empty
Fix number adaptive filter issue for IE8
Merge branch 'master' of https://github.com/oria/gridx
Fix a focus problem for column lock.
clean code
Merge branch 'master' of https://github.com/oria/gridx
Remove tree mark set in Tree module
Merge branch 'master' into 1.2