Preposition sould be ignored in sorting

Prepositions the part in ones name that seppartes the first name from the second name. For example "Jan de Vries" where "de" is a preposition. While not common in English, these prepositions are common in languages like spanish and dutch.

When sorting contacts dexter should take into account the prepositions.

Right now there are a few options for closing this bug:

#Adding another field for prepositions
+ Easy to implement
+ Can't go wrong
- Messy UI
- A extra option for people to worry about

#Guessing the preposition
+ Easy for the user
+ No UI changes
- Its ambiguous where the prepositions should be added
- Hard to implement
- It hard to guess what exactly the perposition is, this can result in breaking other things.

#Making a list of known prepositions
+ Easy to implement
+ Easy for the user
+ No UI changes
- Its ambiguous where the prepositions should be added
- Hard to maintain

#Ignore the issue
+ Easy to implement :P
+ Not a big deal to the user, there is a (awesome) search anyway
- Looks messy to users that have contacts with prepositions
- favours some users above others