Reviewed-on: https://dev.tt-rss.org/fox/tt-rss/pulls/77

Merge pull request 'Handle no response body, file_get_contents() failure in UrlHelper::fetch()' (#78) from wn/tt-rss:feature/handle-no-response-body into master

Reviewed-on: https://dev.tt-rss.org/fox/tt-rss/pulls/78

This isn't supported for arrays with string keys until PHP 8.1.

https://wiki.php.net/rfc/spread_operator_for_array

This reverts commit 6a68ed02.

 * allow plugins to inject JS code into login form

Merge pull request 'Fix an error when disabling all user plugins' (#76) from yan12125/tt-rss:fix-setPlugins-error into master

Reviewed-on: https://dev.tt-rss.org/fox/tt-rss/pulls/76

If I enabled some user plugins via Preferences -> Plugins and then
disabled all of them, an error occurred:

Jul 16 22:34:20 php[100]: PHP Fatal error:  Uncaught TypeError: array_filter(): Argument #1 ($array) must be of type array, null given in /usr/share/webapps/tt-rss/classes/pref/prefs.php:1027
Jul 16 22:34:20 php[100]: Stack trace:
Jul 16 22:34:20 php[100]: #0 /usr/share/webapps/tt-rss/classes/pref/prefs.php(1027): array_filter()
Jul 16 22:34:20 php[100]: #1 /usr/share/webapps/tt-rss/backend.php(136): Pref_Prefs->setplugins()
Jul 16 22:34:20 php[100]: #2 {main}
Jul 16 22:34:20 php[100]:   thrown in /usr/share/webapps/tt-rss/classes/pref/prefs.php on line 1027

Apparently the issue was elevated from a warning to an error in PHP 8.0
[1].

[1] https://php.watch/versions/8.0/internal-function-exceptions