Translation: add a module-aware translation helper

With this fix $this->translate works in our view scripts

refs #6338
Translation: use translation for monitoring/views

Just a bunch of translation-helper calls

refs #6339
Translation: another bunch of translatable strings

refs #6339
Translation: global translation for view helpers

As our pagination helper is used in multiple domains gettext would
fail if we don't explicitely call the correct translation function
carrying the "global" domain.

refs #6338
Translation: initial German translation

refs #6340