*Title : Custom HTTP header override

*Documentation:
This feature enables custom HTTP headers to be set at specified subtrees and 
mondule/views. The custom HTTP headers must be specified in an override for the
site.ini settings.

When specifying path as /, only the module an view "content/view" will be affected.

Example:
# Will set Pragma to "no-cache" for whole content/view.
[HTTPHeaderSettings]
HeaderList[]
HeaderList[]=Pragma

Pragma[]
Pragma[/]=no-cache


Note:
Using URLs like : content/view/... will generate 1 extra SQL. Use url alias to
avoid this.