first draft of Advanced Setup
second draft of Advanced Setup

add details on hashes
update browser support message
adjust formatting for detailed instructions

add indents for content underneath <h5> to visually chunk the
information
merge in changes from master

changes to align up to 6b07aa8 on master:
- fixing domain name in scripts and links
- updating script-source attribute
- updating Google Analytics ID
copyediting
enable Google Analytics script

we're now using a filtered view to track event specifically from the
production domain, so there are no more concerns about false positives
clean up whitespace
add 'Technical Details' page