nanoc.yaml: move Sync Gateway to mobile menu
nanoc.yaml: combine SDK guides and SDK API references into one menu
main.less: underline h1 and h2 headings, add .notebox styles
Server: use new notebox styles
default.erb: update google analytics account
Ruby SDK: fix code block formatting (RCBC-147)
Ruby SDK: fix code block formatting (RCBC-147)
updates to install and upgrade
Ruby SDK: fix table headings (RCBC-149)
Merge branch 'stage' of https://github.com/couchbaselabs/docs-ng into stage