Remove nl_BE city names

The city names in parentheses are nl_BE translations from the associated fr_BE names.
Fix case of province names

‘occidentale’, ‘orientale’, ‘wallon’ and ‘flamand’ are all adjectives here. As such, they need to be written in lower case in fr_BE.
Fix country names

Remove the words inside parentheses and put them in front of the names, as people would do when writing country names.

The versions with parentheses are only used in alphabetical listings, not in real-world situations.
Add two street suffixes
Merge pull request #354 from miclf/master

Improve fr_BE Address Provider