Merge pull request #14 from freddylimpens/master

add update-file feature
fix after user profile evolution
Merge branch 'master' of https://github.com/UnissonCo/dataserver
a few more convenient fields (in flipflop)
Merge branch 'master' of github.com:UnissonCo/gupserver
flipflop comments
enhance flipflop api
enhance flipflop
refactor bucket API
remove unicode upload error + settings error
docs on postgis db setup and adjust settings