Ubuntu 17.10 doesn't build by default

[jkuszmaul]

Followed instructions at opencv/opencv#10032 about modifying /usr/include/x86_64-linux-gnu/c++/5/bits/c++config.h -- ideally we shouldn't have to do this to fix whatever error we were having (was in the protobuf library, I believe--Mitch, try reversing the change I made to the aforementioned include, per the suggestion in the linked issue and properly solving the issue so that more people with Ubuntu 17.10 don't encounter it).

[jkuszmaul]

Also, get error in ws/src/HTTPSocket.h about sprintf not being a member of std.

• May be due to using outdated version of uWebsockets (update version tag in WORKSPACE file; find possible versions in https://github.com/uNetworking/uWebSockets/releases)
• May want to create a wpisailbot fork of uWebsockets with updates to allow it to build properly