Update to master of VE core

New changes:
d89cc15 Add sticky static property to inspector tools
5d8e3fd Fix more copyright headers not updated to 2014
e97f100 Always use absolute URLs in external links in the clipboard
9cc0a8d Fix descriptions of ve.dm.Surface#change tests
16fda03 Check for valid offset when calculating insertion annotations
a156f76 Add 'get range on change' toggle button to standalone demo
eca979d Move initial selection to first content offset

Change-Id: Ibdc130775613af50014d9effe0f2e39bba501e87