Sites without search now do not include search.js or lunr.js,
making the javascript for those pages much faster to load.

Lang default

Add Emerging Threats API docs link to the readme

Fixes a variable leak and simplifies low score filtration

Signed-off-by: Christopher Rogers <chrissrogers@gmail.com>

Scroll to closest header

Don't crash on invalid language

Search, bug fixes, new features, and more

Reposition headers based on score

Enforce min score

- Uses onpopstate to handle users pressing back buttons
- Switches the query string and changes the language
  without reloading.
- Thanks to @bootstraponline for some of the code in this commit.

Fix flash on page load