Remove digiline quantum entaglement.

Before, sending a table over digilines didn't copy the table.  This means that two devices can both end up with the same table by sending one to the other.  I've changed digilines to copy the table before calling effector.action, and made digiline:tablecopy able to handle recursive tables.  

If you don't see why this is useful, it will make more sense when I make my pull request for mesecons, which allows luacontrollers to have semi-persistent data as well as mem.  
This if statement is unnecessary - the if statement at the beginning of the function can handle it.