Reverted my so called fix for permission install exception; my assumptions were wrong - I'll try it other way
reverted permission check; by a regrettable accident, an incorrect code change was committed; put it back as in the original XE
Merge remote-tracking branch 'origin/dev' into dev
fixed the 2 missed debug settings (level and threshold)
removed __OB_GZHANDLER_ENABLE__, added setting to Kernel
removed __OB_GZHANDLER_ENABLE__, added setting to Kernel 2
Merge branch 'master' into dev

Conflicts:
	config/config.yml
	src/Karybu/EventListener/CMSListener.php
WIP for supporting multiple logger handlers; now renamed the existing (stream) handlers
small typo error
[#46812045] Refactor old config.inc.php

Removed constants related to debugging like this:
- _DEBUG_ - still kept, defined behind the scenes for backwards compatibility; depends on Kernel debug parameter
- _DEBUG_OUPUT - completely removed; the code for writing to firebug is no longer used, we will use monolog handlers for that instead
- _DEBUG_DB_OUTPUT_ - completely removed - will be logged at all times, depending on error level
- _LOG_SLOW_QUERY_ - completely removed - will be enabled always if debug is on; settings in debug module
Removed require_once for db classes and updated them to use autoloading instead.
Improvements for response summary listener to show request duration information.
[#46812045] Removed Elapsed class load time constant in config.inc.php since classes are lazily loaded now (with autoloader).
[Fixes #46818699] debug toolbar appears in every modal popup
Merge branch 'dev'