test(rxBreadcrumbs): names, count, and main

This is to make rxBreadcrumbs easier to bring into apps that need to
assert breadcrumb status on a page. It uses the same approach that
rxPage uses to pull in the default element, since there's likely only
one on the page, and there's only a couple things that matter.
Merge pull request #545 from Droogans/e2e-rx-breadcrumbs-main

test(rxBreadcrumbs): names, count, and main
chore(grunt): omit bower_components from watch for faster reload
feat(rxFeedbackSvc): added ability to customize e-mail; Fix #546
Merge pull request #547 from rackerlabs/speed-up-watch

chore(grunt): omit bower_components from watch for faster reload
Merge pull request #548 from rackerlabs/546-feeback-email

feat(rxFeedbackSvc): added ability to customize e-mail; Fix #546
style(rxApp): Change colors for pre-prod menu

Closes #538