Update messages_es.properties
Merge pull request #247 from albertocabello/master

Updated messages_es.properties
Checkstyle fixes to make the build behave.
OAuth tests fixed. Decided to remove the static logger from tests, as it ties the logging messages of classes to tests.
Removed blank line.
Merge pull request #249 from Unicon/NOJIRA-OAUTH-TESTS

NOJIRA-OAuth-Tests: Fixes OAuth test failures
Merge remote-tracking branch 'upstream/master' into CAS-1292
CAS-1292: Front Channel SLO

Update source code according to Misagh's and Marvin's reviews