Add calendar scripts to a specific page. Page builder themes rejoice!

add_calendar_scripts_everywhere.php

<?php
//* Please do NOT include the opening php tag, except of course if you're starting with a blank file

add_action( 'template_redirect', 'my_add_ee_calendar_assets' );
function my_add_ee_calendar_assets() {
  // change is_page() parameter to match your calendar page slug
  if ( class_exists( 'EED_Espresso_Calendar' ) && is_page( 'calendar' ) ) { 
    global $is_espresso_calendar;
    $is_espresso_calendar = TRUE;
    add_action( 'wp_enqueue_scripts', array( EED_Espresso_Calendar::instance(), 'calendar_scripts' ) );
    if ( EED_Espresso_Calendar::instance()->config()->tooltip->show ) {
      add_filter('FHEE_load_qtip', '__return_true' );
    }
  }
}