Add:
    bitshift/crawler/indexer.py
        -Add a `try-except` block to catch the `UnsupportedFileError` exception.

Add:
    bitshift/crawler/indexer.py
        -Add conditional to remove the full path of a repository if the owner's
        directory contains only one sub-directory.

Add:
    bitshift/crawler/indexer.py
        -Add `parse()` and `insert()` calls to `_insert_repository_codelets()`.

Add:
    bitshift/crawler/(__init__, crawl).py
        -Move `__init__.py` to `crawl.py`, and add a `main` block to allow
        running the crawler via `python -m`.

search results from codelets.

Conflicts:
    bitshift/languages.py

Add:
    templates/index.html, static/js/index.advanced-search-form.js
        -Remove commented-out code, `testQueryStringGeneration()`, etc.; prepare
        for merging into `develop`.

    static/js/advanced-search-form.js
        -Perform a live update of the main query bar with a user's inputs in the
        advanced search form.

Add:
    static/js/index.advanced-search-form.js, static/sass/index.sass,
    static/css/lib/jqueryui.custom.min.css
        -Add `jQuery UI` autocompletion menu to the advanced-search form's
        language input field, to replace `twitter typeahead` (which was
        incompatible with the new form's style rules).

    static/js/index.advanced-search-form.js
        -Add regex field specifier to query string.