Fixes for no-cache.txt (#7907)

* Closes and fixes error from #7885
* `no-cache.txt` is now respected in `f.php`, `ext.php` and `serve` action in `extensionController`
   * And in all other places that weren't checking for `no-cache.txt` (some extensions maybe)

1 files changed, 1 insertions, 1 deletions

diff --git a/p/ext.php b/p/ext.php
index 5fdd3df6c..6642ff2d1 100644
--- a/p/ext.php
+++ b/p/ext.php
@@ -105,6 +105,6 @@ if ($mtime === false) {
 
 require(LIB_PATH . '/http-conditional.php');
 
-if (!httpConditional($mtime, 604800, 2)) {
+if (file_exists(DATA_PATH . '/no-cache.txt') || !httpConditional($mtime, 604800, 2)) {
 	readfile($absolute_filename);
 }