[rekonq] Webshortcuts

[Lionel Chauvin]

I found this discussion:
http://www.archivum.info/kfm-devel@kde.org/2005-10/00016/PATCH:_webshortcuts

I understand now why the delimiter was not replaced by a space by default.
One reason is because webshortcuts are also usable in krunner and they are in 
conflict with commands.

Ok, for 0.2 we can let webshortcuts broken when the delimiter is space.

One reason why space was not choosen for default is for queries like: "kde 
xcomposite". We don't want launch the kde api website.

I think our futur awsome bar must re-think webshortcuts and use opensearch to 
remove ambiguities.