Moved Config object to the DI container and override w/ TestConfig through DI config. Replaced the singleton GlobalSettingsProvider hack w/ the concept of an EnvironmentManipulator (internal to Piwik, not to be used anywhere but TestingEnvironment.php).

Remove GlobalSettingsProvider interface and replace w/ GlobalSettingsProvider class, the class is the old IniSettingsProvider class.

Encode/decode INI properties in IniFileChain since the encoding/decoding is used to avoid issues w/ parse_ini_file() use.

Make Config::reload a protected member so Config is generally setup once and not reloaded w/ different files later.

Make IniSettingsProvider a singleton in order to make sure IniFileChain is shared (again, regressed in a previous commit), and fixed many tests. Changed CacheTest from integration to unit.

Remove uses of Config::init(), Config::clear() and Config::setTestEnvironment(). Replace last w/ mock config class, which is closer to use of DI.

Remove test config.ini.php file in ConfigTest::test_forceSave_writesNothingIfThereAreNoChanges so it doesn't trigger failure in ReleaseCheckListTest.

Fix a regression (w/ new test) where if no changes in user settings config, the config file is erased. Also sort config sections w/ case insensitive search.

Add tests for IniFileChain, compose IniFileChain in Config instead of inherit and get tests to pass.

Extract INI file merging logic in Config class and move to new IniFileChain class. This is an intermediate step in allowing Config/Plugin\Manager to exist in DI.

refs #5940 put tests in correct folders, better testsuite names, some tests still fail and I cannot figure out why

refs #5409 #341 #5349 if a config value contains a dollar sign convert it to an html entity to prevent it being interpreted as a PHP variable. This allows us to remove the RAW ini parser flag which causes trouble on some PHP versions as the parser seems to be buggy.

Piwik is a free/libre analytics platform. Refs #4455 GNU Package requirement to use free/libre instead of open source

Converting Access & Auth to namespace

2 steps required:

1. Refactor > Move > \Piwik\Core\Config (uncheck "Create new File")
2. Refactor > Rename > Piwik_Config to Config

Converting Piwik core source files, PHP, JS, TPL, CSS

More info: http://piwik.org/participate/coding-standards/

git-svn-id: http://dev.piwik.org/svn/trunk@6507 59fd770c-687e-43c8-a1e3-f5a4ff64c105