Save import structure

Feature
#1

Rational

Everytime I need to import data I have to select the fields are included in my CSV file

Proposal

Save the structure of the import in users preferences. User might be able to add more or remove fields from the structure, but the important thing is that it is saved automatically once the import is complete.
Next time user needs to import, he or she will save a lot of time

#2

For me, it is better to use the auto-detect feature because it is the file that contains the information.