tests: improved Latte tests, removed codefix()
Latte: optimizePhp() moved to Latte\Helpers
Latte: optimizePhp() supports <?xml declarations
Latte: new Engine API
tests: Latte tests updated for new API
Configurator: config files that have section must be added with parameter Configurator::AUTO (BC break)
DI: added ContainerFactory
Configurator: uses DI\ContainerFactory (BC break)

Compiler::createLoader() and createCompiler() replaced with createContainerFactory()
DI\ContainerFactory: removed dependency on Nette\Caching and PhpFileStorage