Mongodb support#46

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vlefr wants to merge 6 commits intorvanlaak:3.xfrom

vlefr:mongodb-support

Commits on Oct 22, 2015

add document to work with mongodb
Victor Lennel
committed
update service to work with db driver
Victor Lennel
committed
add configuration check for db driver
Victor Lennel
committed
load db services
Victor Lennel
committed
refactor settings manager with mongodb
Victor Lennel
committed
fix setting retrieve with mongodb
Victor Lennel
committed