FAQ Reordering

I reordered FAQ entries, and introduced (possible) FAQ sections.
I fixed an ordering bug (if order was read from file content it was a string)
Introduced two new FAQ entries.
 - I am not sure wether we should direct new users to the oracle CDI tutorial. It is a neutral tutorial, but pretty bad. I don't have the time to create a tutorial for cdi-spec.org, but we should have one for new users.
 - Added explicit beans.xml location FAQ entry.
Some minors.