Merge branch '2.7' into 2.8

* 2.7:
  Updated all the README files
  [TwigBundle] Fix failing test on appveyor
  Improved the error message when using "@" in a decorated service
  Improve error reporting in router panel of web profiler
  [DoctrineBridge][Form] Fix performance regression in EntityType
  [FrameworkBundle] Fix a regression in handling absolute and namespaced template paths
  Allow to normalize \Traversable
  minor [Form] fix tests added by #16886
  Remove _path from query parameters when fragment is a subrequest and request attributes are already set Added tests for _path removal in FragmentListener
  Simplified everything
  Added a test
  Fixed the problem in an easier way
  Fixed a syntax issue
  Improved the error message when a template is not found
  [CodingStandards] Conformed to coding standards
  [TwigBundle] fixed Include file locations in "Template could not be found" exception

Author: fabpot

README.md

@@ -1,84 +1,20 @@
 CssSelector Component
 =====================
 
-CssSelector converts CSS selectors to XPath expressions.
-
-The component only goal is to convert CSS selectors to their XPath
-equivalents:
-
-```php
-use Symfony\Component\CssSelector\CssSelectorConverter;
-
-$converter = new CssSelectorConverter();
-print $converter->toXPath('div.item > h4 > a');
-```
-
-HTML and XML are different
---------------------------
-
-The `CssSelector` component comes with an `HTML` extension which is enabled by
-default. If you need to use this component with `XML` documents, you have to
-disable this `HTML` extension. That's because, `HTML` tag & attribute names are
-always lower-cased, but case-sensitive in `XML`:
-
-```php
-// disable `HTML` extension:
-$converter = new CssSelectorConverter(false);
-```
-
-When the `HTML` extension is enabled, tag names are lower-cased, attribute
-names are lower-cased, the following extra pseudo-classes are supported:
-`checked`, `link`, `disabled`, `enabled`, `selected`, `invalid`, `hover`,
-`visited`, and the `lang()` function is also added.
+The CssSelector component converts CSS selectors to XPath expressions.
 
 Resources
 ---------
 
-This component is a port of the Python cssselect library
-[v0.7.1](https://github.com/SimonSapin/cssselect/releases/tag/v0.7.1),
-which is distributed under the BSD license.
-
-You can run the unit tests with the following command:
+  * [Documentation](https://symfony.com/doc/current/components/css_selector.html)
+  * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+  * [Report issues](https://github.com/symfony/symfony/issues) and
+    [send Pull Requests](https://github.com/symfony/symfony/pulls)
+    in the [main Symfony repository](https://github.com/symfony/symfony)
 
-    $ cd path/to/Symfony/Component/CssSelector/
-    $ composer install
-    $ phpunit
-
-License
+Credits
 -------
 
-This component is a port of the Python cssselect library,
-which is copyright Ian Bicking, https://github.com/SimonSapin/cssselect.
-
-Copyright (c) 2007-2012 Ian Bicking and contributors. See AUTHORS
-for more details.
-
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-1. Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-
-2. Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in
-the documentation and/or other materials provided with the
-distribution.
-
-3. Neither the name of Ian Bicking nor the names of its contributors may
-be used to endorse or promote products derived from this software
-without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL IAN BICKING OR
-CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+This component is a port of the Python cssselect library
+[v0.7.1](https://github.com/SimonSapin/cssselect/releases/tag/v0.7.1),
+which is distributed under the BSD license.