Merge branch '5815-goaccess-stats-blocked-by-content-security-policy-nginx' into 'develop'

Resolve "GoAccess stats blocked by Content Security Policy (nginx)"

Closes #5815

See merge request ispconfig/ispconfig3!1265

Author: Till Brehm

server/conf/nginx_vhost.conf.master

@@ -169,7 +169,7 @@ server {
             index index.html index.php;
             auth_basic "Members Only";
             auth_basic_user_file <tmpl_var name='stats_auth_passwd_file'>;
-            add_header Content-Security-Policy "default-src * 'self' 'unsafe-inline';";
+            add_header Content-Security-Policy "default-src * 'self' 'unsafe-inline' 'unsafe-eval' data:;";
         }
 
         location ^~ /awstats-icon {

server/plugins-available/apache2_plugin.inc.php

@@ -1957,7 +1957,7 @@ function update($event_name, $data) {
 
 		if($data['new']['stats_type'] != '') {
 			if(!is_dir($data['new']['document_root'].'/' . $web_folder . '/stats')) $app->system->mkdir($data['new']['document_root'].'/' . $web_folder . '/stats');
-			$ht_file = "AuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$data['new']['document_root']."/web/stats/.htpasswd_stats\nrequire valid-user\nDirectoryIndex index.html index.php\nHeader unset Content-Security-Policy\n<Files \"goaindex.html\">\nAddDefaultCharset UTF-8\n</Files>\n";
+			$ht_file = "AuthType Basic\nAuthName \"Members Only\"\nAuthUserFile ".$data['new']['document_root']."/web/stats/.htpasswd_stats\nrequire valid-user\nDirectoryIndex index.html index.php\nHeader set Content-Security-Policy \"default-src * 'self' 'unsafe-inline' 'unsafe-eval' data:;\"\n<Files \"goaindex.html\">\nAddDefaultCharset UTF-8\n</Files>\n";
 			$app->system->file_put_contents($data['new']['document_root'].'/' . $web_folder . '/stats/.htaccess', $ht_file);
 			$app->system->chmod($data['new']['document_root'].'/' . $web_folder . '/stats/.htaccess', 0755);
 			unset($ht_file);