Fix asynchrony bugs in dc_rack_server.py#293

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amopremcak wants to merge 2 commits intolabrad:masterfrom

amopremcak:fix_dc_rack_server

Commits on Dec 11, 2015

Fix asynchrony bugs in dc_rack_server.py
amopremcak
committed

Commits on Dec 15, 2015

Removed comment from strState method and added back in write statement into changeLEDs method
amopremcak
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