Add rewrite rules to theme.

add-rules.php

<?php
## Rewrite rules
add_filter( 'page_rewrite_rules','gcc_insert_rewrite_rules' );
add_filter( 'query_vars','gcc_insert_query_vars' );
add_action( 'wp_loaded','gcc_flush_rules' );

// flush_rules() if our rules are not yet included
function gcc_flush_rules(){
	$rules = get_option( 'rewrite_rules' );

	if ( ! isset( $rules['(edit-location)/(.*)$'] ) ) {
		global $wp_rewrite;
	   	$wp_rewrite->flush_rules();
	}
}

// Adding a new rule
function gcc_insert_rewrite_rules( $rules ){
	$newrules = array();
	$newrules['(edit-location)/(.*)$'] = 'index.php?pagename=$1&location_name=$2';
	return $newrules + $rules;
}

// Adding the id var so that WP recognizes it
function gcc_insert_query_vars( $vars ){
    array_push($vars, 'location_name');
    return $vars;
}