Convert DrupalKernel into simply a DrupalApp class, since all of the kernel-y stuff is happening in HttpKernel anyway.

A hacky way of hardcoding controller arguments. Because page arguments are
translated onto the attributes variable and the attributes are used for
arguements via reflection, this lets you push arguments onto the controller
that aren't on the path. This is hacky but so was the original version and
it shouldn't cause a problem as long as path arguments don't share a name
which would have caused problems anyways.

We return render arrays from requests ATM and until we transition to actual
request objects, we need to translate so Symfony can function.

This will bubble down to the request and since that will be passed around, make
a lot of integration with Symfony and transitioning easier.

This is a transitional implementation but by using the UrlMatcherInterface
we can embed our matching logic directly into Symfony's routing logic.

Issue #41595 by pillarsdotnet, m3avrck, sun et al: Fixed All pager links have an 'active' CSS class.

Issue #1250800 by attiks, Jelle_S, dereine: Fixed Language domain should work regardless of ports or protocols.

- Patch #1431040 by Gábor Hojtsy: rename LOCALE_LANGUAGE_NEGOTIATION_* constants to LANGUAGE_NEGOTIATION_*.

Issue #814804 by JacobSingh, ksenzee, draenen, et al: Fixed taxonomy_autocomplete() produces SQL error for nonexistent field.

Issue #1320028 by isay: Fixed bartik style-rtl.css have not overide text align to rigth for tr td, tr th tags.

Issue #1334344 by jessebeach, mikestefff: Fixed During update, Bartik throws an error that () is not defined.

Issue #998256 by justafish, Dave Reid: Please let modules know about the original URL alias in hook_path_update().

- Patch #1068016 by franz, karschsp, BartVB, Niklas Fiekas: fixed number field validation fails to block some invalid input causing later SQL fatal error.

- Patch #1357918 by Gábor Hojtsy, swentel, sun, no_commit_credit: missing update for language_default() in language langcode update.

- Patch #1425280 by Niklas Fiekas, swentel: no contextual links in node lists after a node without contextual links.

- Patch #1425280 by Niklas Fiekas, swentel: no contextual links in node lists after a node without contextual links.