Adds German locale for Travis.

.travis.yml

@@ -18,6 +18,7 @@ matrix:
         - PHPCS=1
 
 before_script:
+  - sudo locale-gen de_DE
   - sh -c "if [ '$DB' = 'mysql' ]; then mysql -e 'CREATE DATABASE cakephp_test;'; fi"
   - sh -c "if [ '$DB' = 'mysql' ]; then mysql -e 'CREATE DATABASE cakephp_test2;'; fi"
   - sh -c "if [ '$DB' = 'mysql' ]; then mysql -e 'CREATE DATABASE cakephp_test3;'; fi"