Lazy load subscribers
Merge pull request #447 from romainneutron/lazy-load-subscribers

[3.8] Lazy load subscribers
Remove duplicate verbosity check
Add second logging channel
Add default plugins configuration
Merge pull request #449 from romainneutron/monolog

[3.8] Add second channel for logger
Enhance XSendFileMapping to handle apache

Update xsendfile
Refactor XsendFile

Fix commands

Fix typo