updated test support files
Templating: improved back compatibility for Latte
Diagnostics: Helpers is deprecated
NetteLoader: added some missing renamed classes
Neon: namespace changed to Nette\Neon
Environment moved to deprecated

Conflicts:
	Nette/Loaders/NetteLoader.php
Configurator moved to component nette/bootstrap
typos
shortcut dump() moved to Tracy [Closes #1475]
readme.md: added badge and link to Packagist
composer.json creates Nette Loader
composer.json: more accurate dependencies >=2.2.0
composer.json: removed 'suggest' and PHP extensions
tests: removed @author
tests: simplified templating test