HM-05 page? Do you mean HC-05 (http://www.espruino.com/Bluetooth)
I don't have a HM-10 here to test with, but as far as I know (in answer to your questions)
The power should come from the same place as in the HC-05 (the 2 corner pins near where pin A4. Most of the pads are not connected to anything, so it won't actually matter if you solder them - as long as they are not shorted together.
Yes, even if you connect only the two power pins, I believe you should be able to pair it, so my guess is that somehow power is not connected up.
That won't be an issue when writing Serial1.print("AT")/etc. What it's saying is that the 'console' - the thing you're writing commands into - will be on USB... But when you power from a wall supply it'll automatically move to Serial1, so you can program Espruino over bluetooth.
Having said that, HM-10 is different because it's BLE, so I don't believe it'll directly emulate a serial port.
Pin 24 is optional, but as it's a status LED, it might help you find out what's going on.
Next I'd probably try and put the status LED on so you can see the state of the module.
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