Pebble Classic screen fix

The original Pebble watch suffers from display issues when the ribbon cable for the display comes loose. This is the widely-known "screen corruption" issue. This object is designed to hold the ribbon cable in place. I'm calling it release candidate 1 since it's been working for about an hour at this point. I will update the design if I have issues with it. If you have the Kickstarter edition of the watch you may not be able to use this fix since you have no screws.

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