pt_BR translation
Added spanish translation
Adding target to Travis building status
fix version in master
Add django 1.7 to the tox config
Merge pull request #321 from lfagundes/master

pt_BR translation
Merge pull request #324 from borjafp/master

Added spanish translation
Merge pull request #325 from mauricioabreu/master

Adding target to Travis building status
cast primary-key value with field before sending to database.

Needed when UUID column type is used as primary key
Test UUID support