Update VE core submodule to master (4745b44)

New changes:
3fb1060 Remove ve.ce.Surface#getClickCount
fc52c6c Remove IE nbsp hack
cd2e2c8 Add HTML conversion button to SA demo
e04df70 Fix missing i18n for 'auto' language label

Local change:
* Add auto message to i18n.

Change-Id: I534e27d3578cf9b42b755c91aa1b17122835fb83
Merge "Update VE core submodule to master (4745b44)"