XLS export
fixed versions in requirements.pip
removed wroong import
use of setuptools
fixed setup
add django to requirements
Added it translation
Merge pull request #25 from cellarosi/develop

Added it translation
add feature to export dictionaries in export_as_csv()

is now possible to pass dictionaries to export_as_csv(), so
it is possible put joined fields in the exported data

 fields = ['name', 'linkedtable__fieldname']
 qs = Model.objects.values(*fields)
 export_as_csv(qs, fields)
add feature to use callable as 'columns' in export_as_csv()
updates docs
fixes 'filename' issue in export_as_csv, export_as_xls

before this was impossible to force teh filename when out==None
export_as_xls now accept dictionaries as queryset and callable as columns
fixes bug in mass_update

do not call form.clean() because the form could not contains
all the values needed
add feature to pick source object for nass_update
adds support to dotted syntax to the  'fields' parameter of export_as_...

it's now possible ti use export_as_csv(fields=['obj.fk.field'.....
updates travis config
updates travis config
updates travis config
updates tox