build: Bump various devDependencies to latest

Authored by Jdforrester-WMF on Apr 20 2017, 11:42 PM.

Description

build: Bump various devDependencies to latest

grunt-banana-checker 0.5.0 → 0.6.0
grunt-jsonlint 1.0.7 → 1.1.0

Change-Id: I86cfba1b4d3d8dc30df824126fbfc64ee478d9af

Details