[#2504] Adding some better headers to the Process component
Merge branch '2.1' into 2.2

Conflicts:
	components/process.rst
Merge branch '2.2'
Merge branch 'master' into romainneutron-process-signal-pid

Conflicts:
	components/process.rst
[#2504] Backporting information about stopping a process
Merge branch '2.1' into 2.2
Merge branch '2.2'
Merge branch 'master' into romainneutron-process-signal-pid

Conflicts:
	components/process.rst
Merge pull request #2507 from dbu/document-reusable-bundle-model

[WCM] document the doctrine compiler pass
Fixing syntax error
Merge branch '2.0' into 2.1
Merge branch '2.1' into 2.2
Merge branch '2.2'
Merge remote-tracking branch 'origin/master'
[#2507] Tweaks for new compiler pass entry
Merge pull request #2508 from maxromanovsky/improving_web_server_config

Improving Web server configuration
Merge remote-tracking branch 'origin/2.0' into 2.0
[#2508] Adding extra warning about app_dev.php and config.php
Grammer tweak

Old grammar doesn't make sense.
Merge pull request #2511 from BenoitLeveque/2.0

kernel.bundle_dirs doesn't exist in KernelParameters