build: Bump dependencies
- Add grunt-cli so that users don't need grunt-cli pre-installed globally.
- karma-coverage@0.3.0 Fixes https://github.com/karma-runner/karma-coverage/issues/24
- karma-chrome-launcher@0.1.8 Fixes https://github.com/karma-runner/karma-chrome-launcher/issues/41. This will allow our Jenkins setup to rid the CHROME_BIN hack, after all projects have updated.
- grunt-jscs@1.8.0: Addresses T90816.
Change-Id: I49eb93e590e475536bbaaa30b83ea888390190d2