Gruntfile.js: Remove default `report` option.

BS3 commits: dea1945b4769cf9097b5da67a587b29a982023e2
Add TOC entry for "Third-party libraries" callout section to JS docs

BS3 commits: 98bddd8904f2d745ad16d8bd591a0771577bf414
Update normalize.css to v3.0.1

BS3 commits: 8d3e9874202347eb9df0e7ca7e9679580c636756
Fix tooltip viewport example

BS3 commits: 90902db50cd9545639bb79ae30d1d81e84c12b6c