Cases of wp_enqueue_style being called after wp_head has run

[tw2113]

We have some places and cases of calling wp_enqueue_style() later than we should, and it's causing stylesheets to be loaded via wp_footer(). While this is generally fine, as the styles still get applied, though delayed, it is causing validation issues with html5 validator. From a practical stance, the styles should be loaded in regardless.

Two known places of it running late:
earned-user-achievements-widget.php line 91. In the widget() method.
content-filters.php line 116 in a callback for a the_content filter.

Possible other places:
content-filters.php line 383 in the badgeos_render_achievement() function. Not explicitly called right away, but there's good chance it's used after wp_head has run.
shortcode callbacks for both badgeos_achievement and badgeos_achievements_list.