[html] + <img>, −<script>

<script> was being inserted into <head> by DOMDocument on load, checking <head> too.
[ajax/createChannel] Fixed variable names
[ajax] + Channel information queries
[cli] Added CliUser
[config] Static class
AjaxQueryPart error fixed
Merge remote branch 'origin/guimier' into teyssier-fichiers

Conflicts:
	common/classes.json
	web/php/ajax/AjaxQueryPart.php