Bug 962307 - Build Gigabit website

Bug 962307 - Fixes and tweaks for Gigabit pages

* scaled/optimized images
* added /b/ redirect
* general HTML/CSS cleanup
Merge pull request #1659 from craigcook/mmmavis-bug-962307-gigabit-v2

Bug 962307 - Gigabit Fund website
Bug 965538 - [MWC 2014] redirect /mwc/ to MWC preview page Feb 3