Fixes #341 - makes sure the correct link is generated on the developers.google.com/ build
Update use-request-auto-complete.markdown

#342
import image optimization content
drop "public" from cache-control (thats the default)
cleanup and stage image article
drop analytics footer as it skews perf profiling
cleanup CRP content

- drop commented out TOC's
- add TOCs to articles that have multiple sections
- drop &nbsp hack
fix images in CRP perf patterns
escape comments, fixes #339
fix image link, closes #86
layout shows hello world trace, closes #338