break up asset groups of over 150

[trepmal]

If there are more than 150 files in a single concatenated asset, it returns a 400 with no other error. We can proactively break up these large groups.

nginx-http-concat/ngx-http-concat.php

Line 19 in 585e97b

$concat_max_files = 150;

nginx-http-concat/ngx-http-concat.php

Lines 117 to 118 in 585e97b

	if ( 0 == count( $args ) || count( $args ) > $concat_max_files )
	concat_http_status_exit( 400 );

[trepmal]

👍 updates look good in my test environment