Pull request: search custom template both in child and in parent themes

Now the plugin loads custom templates only from current theme. That means only from child theme, and not also from parent theme as we expect (the plugin uses locate_template function to check if template exists and this function searches both in child and parent theme).

With this pull request, the plugin searchs a custom template first in current/child theme, then in parent theme (if you are using a child theme):
https://github.com/bostondv/ultimate-posts-widget/pull/23

I hope it helps.

https://wordpress.org/plugins/ultimate-posts-widget/