Really start the drag only after the delay (if any given)
Really start the drag only after the delay (if any given)

Before this fix, the element was not movable but the style was changed and the event
prevented.
It's now possible to use normally the event until the drag delay expires. Then the drag
really begins
codeice/angular-ui-tree,domio/angular-ui-tree,Movideo/angular-ui-tree,farindra/angular-ui-tree,fmoliveira/angular-ui-tree,a-elnajjar/angular-ui-tree,multiarc/angular-ui-tree,gamejolt/angular-ui-tree,TommyM/angular-ui-tree,midhunsudhakar/test,Rademade/angular-ui-tree,Vela/angular-ui-tree,kotmatpockuh/angular-ui-tree,albi34/angular-ui-tree,geraldpereira/angular-ui-tree,ajitsonlion/angular-ui-tree,Vela/angular-ui-tree,foglerek/angular-ui-tree,asciicode/angular-ui-tree,geraldpereira/angular-ui-tree,joaocc/angular-ui-tree,Movideo/angular-ui-tree,multiarc/angular-ui-tree,brandonaaskov/angular-ui-tree,akshath4u/akkutest,zachlysobey/angular-ui-tree,gamejolt/angular-ui-tree,TommyM/angular-ui-tree,kzganesan/angular-ui-tree,TonyNguyen101/angular-ui-tree,resiliencesw/angular-ui-tree,kzganesan/angular-ui-tree,Alexn555/angular-ui-tree,faceleg/angular-ui-tree,kotmatpockuh/angular-ui-tree,robertdamoc/angular-ui-tree,angular-ui-tree/angular-ui-tree,a-elnajjar/angular-ui-tree,BlakeBrown/angular-ui-tree,fgleilsonf/angular-ui-tree,domio/angular-ui-tree