parse all sql table containing data in relation with user
delete dprint and use prettyprinter
add some comment to perform mongo search
perform mongo search and write it in same file
remove comments and add explanation
remove old mongo function in comments
add in help : if not the filename will be export_theusername.log
Better serialization of mongo data + add UserProfile SQL table
Merge pull request #13 from openfun/task#778_export_user_data

Task#778 export user data