Eliminate 404s due to nested files-to-serve-via-php dir

[brandonpayton]

What is this PR doing?

Fixes website breakage due to a files-to-serve-via-php directory being nested within another files-to-serve-via-php-directory. When this occurs, files are more nested than expected and cannot be found.

What problem is it solving?

During deployment we list files within a directory structure and move them conditionally. Because this is done with a find piped to bash functions that move files to files-to-serve-via-php within the same parent dir, it appears moved files are later discovered by find causing them to be moved again and creating a nested directory structure.

How is the problem addressed?

By filtering out paths that include the string files-to-serve-via-php to prevent them from being moved again.

Testing Instructions

• Manually login to the test site via PHP and run apply-update.sh manually.