[IMP] Add missing function _eval_field()
[FIX] Fix import openerp module
[IMP] Improve raise message for translation
[IMP] Ignore .jasper file
[FIX] Fix bug when use translation tabs
[IMP] Improve demo data to user translation
[ADD] Add demo JRXML file
[ADD] Add field to compose name of the file
[ADD] Add generic function to merge PDF list
[IMP] refactor function to use StringIO instead of
      content in a variable
[ADD] Retrieve PDF to add cover at the begining or
      at the end before send it to the user
Merge branch 'issue/2' into 7.0