Rename UPGRADE file
Move jIniFile* classes to lib/Jelix/IniFile/
Doc about moving legacy classes
Renamed jIniFile* to \Jelix\IniFile\*
Move log classes to Jelix/Logger
Rename all classes of loggers to \Jelix\Logger\*
Move jLocale class to Jelix/Locale
Rename jLocale classes to \Jelix\Locale\Locale
Remove the jelix_api.php file
Fixes  #157
Merge pull request #158 from remibantos/master

Fixes  #157 - closed
Move jEvent classes to Jelix/Event/
Rename jEvent classes to \Jelix\Event\*
Events: remove the use of a global variable
Move coordinator, request and response objects to Jelix/Routing/
Rename jCoordinator, jResponse, jRequest

New names are \Jelix\Routing\Router, \Jelix\Routing\ServerResponse,
\Jelix\Routing\ClientRequest
App::router() replaces now App::coord()
Update comments s/coordinator/router