title: Issue Generating jHipster with dev PostgreSQL
body: <p>First off, I love the framework... it is a lot of fun. I'm still getting to know my way around and don't have any issues when generating the project with a hsqldb dev database, but I am unable to get it generate when trying to connect to a local PostgreSQL db at localhost. Is there something I am missing?</p>
  
  <p>Error output: </p>
  
  <pre><code>[?] (3/7) Do you want to use Hibernate 2nd level cache? Yes, with ehcache (local cache, for a single node)
  [?] (4/7) Do you want to use clustered HTTP sessions? No
  [?] (5/7) Which *production* database would you like to use? PostgreSQL
  [?] (6/7) Which *development* database would you like to use? PostgreSQL
  [?] (7/7) Would you like to use the Compass CSS Authoring Framework? No
  
  undefined:33
  ((__t = ( localhost )) == null ? '' : __t);
            ^
  ReferenceError: localhost is not defined
      at eval (eval at template (/usr/lib/node_modules/generator-    jhipster/node_modules/yeoman-generator/node_modules/lodash/dist/lodash.js:6305:22),     &lt;anonymous&gt;:33:11)
  at JhipsterGenerator.underscore [as _engine] (/usr/lib/node_modules/generator-    jhipster/node_modules/yeoman-generator/lib/util/engines.js:32:30)
  at JhipsterGenerator.engine (/usr/lib/node_modules/generator-jhipster/node_modules/yeoman-generator/lib/actions/actions.js:303:10)
  at JhipsterGenerator.template (/usr/lib/node_modules/generator-jhipster/node_modules/yeoman-generator/lib/actions/actions.js:281:15)
  at JhipsterGenerator.app (/usr/lib/node_modules/generator-jhipster/app/index.js:169:10)
  at /usr/lib/node_modules/generator-jhipster/node_modules/yeoman-generator/lib/base.js:341:43
  at /usr/lib/node_modules/generator-jhipster/node_modules/yeoman-generator/node_modules/async/lib/async.js:551:21
  at /usr/lib/node_modules/generator-jhipster/node_modules/yeoman-generator/node_modules/async/lib/async.js:227:13
  at iterate (/usr/lib/node_modules/generator-jhipster/node_modules/yeoman-generator/node_modules/async/lib/async.js:134:13)
  at /usr/lib/node_modules/generator-jhipster/node_modules/yeoman-generator/node_modules/async/lib/async.js:145:25
  </code></pre>