Different results in Firefox and Chrome/Chromium

[chaosmail]

I tried this on the cat classification demo:

Results in Chrome/Chromium (identical to results from Caffe CPU)

0.69653: tabby, tabby cat
0.19374: Egyptian cat
0.10944: tiger cat
0.00015: lynx, catamount
0.00013: tiger, Panthera tigris

Results in Firefox

0.72386: tabby, tabby cat
0.17630: Egyptian cat
0.09957: tiger cat
0.00017: lynx, catamount
0.00010: tiger, Panthera tigris

Once this issue is resolved, we can add Firefox back to the browser for e2e tests on Travis.