Enhanced Grid Column Header Drag&Drop

• We can now optionally move entire columns
• component.Base: executeVdomUpdate(), update(), promiseUpdate() => removed the vdom & vnode params
• prevent vnodes from getting cloned
• delay the creation of record classes
• wrapperCls updates will now always use the vdom engine

Video for the new DD:
https://www.youtube.com/watch?v=ZOKVLU2QYaU

Code changes in 1 commit: ccbacb8

Online demo:
https://neomjs.com/examples/grid/nestedRecordFields/