* 2.8: (21 commits)
Fix merge
Fix typo
Various fixes esp. on Windows
Fix the validation of form resources to register the default theme
Fix the retrieval of the value with property path when using a loader
[appveyor] minor enhancements
[Process] Disable failing tests on Windows
[Translation] Fix the string casting in the XliffFileLoader
Windows and Intl fixes
Add appveyor.yml for C.I. on Windows
[VarDumper] fixed HtmlDumper to target specific the head tag
[travis] merge php: nightly and deps=high test-matrix lines
consistently use str_replace to unify directory separators
Support omitting the <target> node in an .xlf file.
Fix the handling of values for multiple choice types
moved PHP nightly to PHP 7.0
fixed tests using deprecation features
[Form] made deprecation notice more precise
fixed CS
Fix BC break after split of ACL from core
...
Conflicts:
.travis.yml
composer.json
src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
src/Symfony/Component/Intl/DateFormatter/IntlDateFormatter.php
src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
src/Symfony/Component/Locale/Tests/LocaleTest.php
Nicolas Grekas