First, lets get the errors out of the way, shall we?
The TX pays a 79122 satoshi fee and has a size of 1555 byte. Thats a 50.88 satoshi fee per byte and a very good fee currently, according to your own (@OP) estimate of core as well. Im not sure where the 2mBTC (or 0.2mBTC) come from, but they have nothing to do with the TX linked.
Also, the linked transaction is now confirmed.
Sorry, sorry, sorry, it was the wrong transaction. I've updated the original post with the correct link and here it is again:
https://blockchain.info/tx/5b842d282c2086add3dc3eaa9f5d0f8d05a8056c16703b54607a3a635e43960e(really, this is the correct one now - and still unconfirmed).