fix(#168): stops browsers covering up search suggestions

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What kind of change does this PR introduce? (check one with "x")

• Bug fix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
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Description

Fixes #168 where browsers were covering the search suggestions box with their own suggestions.

It used to look like this:

And now it no longer looks like that. Now the suggestions are not covered up.

I only had to add the HTML attribute autocomplete="off" in 3 places in 1 file.

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Verification steps

Open, for example, the blog I am working on and make a few searches in Google Chrome.

After a few searches, you should notice that Google Chrome starts to cover up the suggestions with its own.

However, edit the HTML using the dev tools to include autocomplete="off" on the form and you will see the problem stops.