Stronger Pebble Classic Charging Stand

I really liked Reconnnn's Pebble Classic charging stand but thought some improvements could be made. A few tweaks were needed to make the charger plug and cord fit nicely. I also extended the lower platform so you can just set down the watch in the "corner" and have it connect with the magnetic connector with confidence. Additional structure was added to reinforce the strength of the overall unit, greatly increasing its likelihood of surviving a floor impact. I also made some shape decisions