Make the homepage top post translatable.

[benlk]

Changes

This pull request makes the following changes:

• Replaces largo_home_single_top() with a modified version that passes 'suppress_filters' => false as an argument to get_posts(), so that WPML can filter the query to make sure it's only returning posts from the correct language. See https://wpml.org/forums/topic/get_posts-by-language-and-suppress_filters-false-issue/ for why.

Why

For #93

Testing/Questions

Features that this PR affects:

• the homepage top post

Questions that need to be answered before merging:

• Is this PR targeting the correct branch in this repository?
• does switching languages change the language of the post displayed in the home top story location?

Steps to test this PR:

1. With WPML installed and configured (I can give you a DB dump)
2. View the homepage in English.
3. Take the post in the homepage top story position (assuming it's English) and create a translation of that post in another language. The basics of post translation are touched upon at https://wpml.org/documentation/getting-started-guide/ and I used the Classic Translation editor for my test post https://wpml.org/documentation/translating-your-contents/using-the-translation-editor/
4. View the homepage in that language. Is the translated post shown?

[joshdarby]

Other than this question, this looks good and works as expected.