travis: deploy condition
travis: deploy condition

* Adds condition to only deploy in release requirements build.

* Fixes PyPI password encryption.

Signed-off-by: Lars Holm Nielsen <7eaffca9f7cd98839b5821d0d23e09ff764b82cd@cern.ch>

inveniosoftware/invenio-i18n,inveniosoftware/invenio-i18n,inveniosoftware/invenio-i18n,inveniosoftware/invenio-i18n