[rekonq] urlbar and search keyword delimiter

[Peter Hedlund]

Hello,

When testing the new urlbar I noticed that the keyword delimiter setting for 
web shortcuts is not respected.

The current implementation assumes that colon is set. I prefer to use the 
space setting (less typing) resulting in (as an example) a Google search for 
"gg:rekonq" instead of just "rekonq" when selecting the top option in the 
itemlist.

Thanks,
Peter