Searching for user guides does not always work

[mattab]

Reproduce:

• Search for contrib
• Expected to see in dropdown the page: http://developer.piwik.org/guides/contributing-to-piwik-core
• Got: no result instead.

Note: it works for almost the same query contr finds the results.

[mattab]

today we got a report from email:

the search bar on developer.piwik.org is not working for me. I can type in my query and I hit enter repeatedly and nothing happens. I'm using Firefox as my browser.

[Findus23]

Fixed in Findus23@760333b

I am currently looking through the code and trying to modernize some parts that weren't touched for a long time: master...Findus23:various-improvements
(As I don't have much time at the moment this will take a bit longer)

Typeahead doesn't allow -1 as the number of items in https://github.com/piwik/developer-documentation/blob/master/app/public/js/app.js#L41, so it broke when there was just one result left and showed nothing

[mattab]

Hi @Findus23 maybe you can create a PR with this bug fix only? as soon as we merge PR on this repo, they get deployed to the website live.