This fixes plugins that expect that they can change the global $ACT
instead of $event->data in the ACTION_ACT_PREPROCESS event.

This make the whole route a little bit uncleaner but would increase
backwards compatibility.

I'm not sure how widespread the problem is and if adding this is a good
idea.

This should recreate the behaviour prior to #1933, where the event was
triggered for all ACT values. Some plugins, like edittable, depend on
the functionality.

Since the hid is optional, it must also be optional in the regex. Also
this commit introduced named capture groups to make it more obvious
which part of the regex captures what.

Also there is now an explicit hid generated for tables, to enable
jumping to the correct section after finishing editing.

This was broken in 2571786c or #1966
respectively.

Known Issues:
* since both title and hid are optional, a hid may be misinterpreted as
a title if the title is not generated.

Exits during testing will break the whole test suite. It makes more
sense to throw an exception in that case. The exception's stack trace
will help to debug the actual problem

No globals required anymore, somewhat more general approach to sending
data to the test system. Clean access through keys.

this helps tieing together the "normal" menus and the MobileMenu and
makes them both implement a getItems() method.

This doesn't really do much except wrapping the functions into a
namespaced class. Autoloading takes care of loading the file.
It's now possible to call lib/exe/ajax.php multiple times in a test
request.

during testing, redirects may not be executed, ActionAbort can default
to redirecting which ould create an infinite loop.

This should reduce the complexity of the function

This fixes the PHP Notice when $headers['Content-Type'] is unset. It
also allows for easier extension later, e.g. adding handling for a JSON
content-type.

This function might be called by an plugin with an array that has only
string keys and hence no key 0. This would trigger an PHP Notice when
trying to get the first key's level.

If an config value is not set in the input lines, initialize it as empty
string to prevent PHP Notices complaining about $line[1] being not set.

A PHP Notice occurred when $url didn't contain a '?'.

Test code for workflow 'show - sectionedit - save/cancel' (with modifications in test classes and 'send_redirect()' and 'act_dispatch()'.

If SSL is not supported, a HTTP request will be made. In the log the request type will be indicated, but on the frontend no additional message would be shown (I think it's better to notify admins about non-SSL situations, but currently when this fetch encounter error, no error message will be shown, so it's better not to add any warning).

This makes it a little easier to splice new elements into position