Update SonataUserBundle.es.xliff

Finished translation till now
Update SonataUserBundle.es.xliff

Changes following comments
Update BaseUser.orm.xml

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | -
| Fixed tickets | #421
| License       | MIT
Merge pull request #422 from lucasgranberg/patch-1

Update BaseUser.orm.xml
Update SonataUserBundle.es.xliff

Small changes
Merge pull request #420 from mmf-amarcos/patch-2

Update SonataUserBundle.es.xliff
Merge remote-tracking branch 'sonata-project/master'