BROOKLYN-101: avoid recordLocationEvent on rebind

- Previously on rebind we would call recordLocationEvent, which would
  try to get `inferMachineDetails` over ssh in the rebind thread
  (taking a long time).
- Now we don’t recordLocationEvent or recordApplicationEvent on
  startup or shutdown.
rename layout to guide-normal
move tests and build things to _build
move deps to deps dir; and upgrade to jquery 2.1.1 (as used in main website) and install bootstrap (also used for main website)
restructure css and images for guide (versioned files) to align with main website
add bootstrap fonts, and point to subdir of deps for clean isolation
add underscore libs used by main website (in prep for import)
move version-specific things to "guide"

"guide" is where versioned content will live when primary website is moved in (to "website" dir);
note this does not yet build; update fixing that to follow
use Pathname ruby api in plugin so relative paths are resolved better
fix paths and links so that guide/ subdir build works nicely
ensure host is included when needed
tidy up config.yml comments, and set encoding utf-8 so accents etc work
new build script which can write docs to root, to /guide, or to /v/VERSION
add website files, and update the build.sh script appropriately
install javadoc to the right place
updated README and added options to build.sh for building the website, guide, or both

and corresponding `_build/config-*` files and tweaks elsewhere
serve static content from `_site` using the new `--serve` option

experimented with using file urls so files could be read directly in the browser
(as @rdowner had done with `build-preview` in the original website),
but the `url` and `baseurl` are not inserted everywhere (and since we prefer relative links
we probably don't want them everywhere, and filesystem doesn't work nicely in `<base>`)),
so that doesn't work too well; serving is a nice and simple option
add `--install` option and updated README, so website is automatically installed to svn staging area
update Gemfile and move to root
tidy build script