Bump lint config versions for eslint 5

[Throne3d]

Bumping eslint-config-airbnb-base fixes a deprecation warning upon lint. Bumping eslint-plugin-import seems prudent since we use imports in the codebase.

The codebase is inconsistent around operator-linebreak, so I thought it best to disable that. implicit-arrow-linebreak is largely followed, but in some places we put implicits within implicits, and in one location we have a long return in the implicit and so trying to one-line it breaks the max-len rule.

[coveralls]

Coverage remained the same at 81.25% when pulling 2586f88 on Throne3d:fix/eslint-config-versions into 4196726 on reactiflux:master.