Show dropdown with default suggestions if minLength is 0

When minLength is 0, dropdown will be shown on focus and when opened
with $(...).typeahead('open')

Also adds an all method to SearchIndex

Conflicts:
	src/bloodhound/bloodhound.js
	src/typeahead/typeahead.js
Build dist
Merge pull request #1 from newrelic-forks/emily/default-suggest

Emily/default suggest