**BUG**
Concise problem statement: Autoroute times out after changing parts to new footprint
Steps to reproduce bug:
1. Load project https://easyeda.com/boxxofrobots/New_Project-5828cd40bdf748ee98de0c00a8528b95
2. See how relatively simple it is
3. Observe how it refuses to route signal pins and times out when routing IC1 and IC2
Results: ![see below][1]
Expected results: A routed board
Browser: Ubuntu/Firefox
[1]: /editor/20170413/58ee87777e1f9.png