Better Docker embedded support

[fix]#485 AttributeError: 'module' object has no attribute 'old_where'

[fix] Display multiple answers in wolframalpha_api

[fix]soundcloud.com guest client_id fetches dynamically

The answer is scraped from a js function, so parsing the html tree
doesn't achieve anything here.

[fix] #471 #463 fix old openssl(<1.0.2) requests verify error

Wolfram Alpha API

forfuckssaketravisnotagain

More appropriate in this case because it will always give just one
answer.

[enh] improve gigablast engine