Generate a PhpStorm advanced metadata file for Core::make() auto-completion
Removed extra loop
Don't insert null class names, make sure class starts with \
Add ability to preview Mobile Theme
Fixed modifying the page output through the on_page_output event.
Merged generate metadata with generate symbols
Added line endings
Merge branch 'meta-data' of github.com:ExchangeCore/concrete5-5.7.0 into meta-data

Conflicts:
	web/concrete/src/Support/Symbol/MetadataGenerator.php
One of the SPs was coming back as the metadata generator
Overlay class does not exist. Changed to lightbox.
fixing hidden resizable
fixed copy/paste mistake
Remove country and script specifications from languages

A language is only 'en', a locale is 'en_US': remove country codes from
getLanguageList so that we have only languages and not locales.

Furthermore we don't need to tell Punic which is the active locale:
Localization::changeLocale already sets the Punic default locale.
PSR-2
Reload countries if the current locale has changed
Add CountryList::getCountriesForLanguage
PSR-2
Improve country handling

- suggest a list of countries for a specific language
- allow selecting a language without a country for locales
Merge pull request #1703 from goutnet/make-edit-add-dialog-resizable

Make edit add dialog resizable
Fix #1702