Edfu: Add variants for Transliteration Font

SVG does not work yet for unknown reasons
use TYPO3 4.7 compatible localisation function
Form: deal with missing configuration for field type
fix locallang symlinks for projects
only tag filter queries when we need the tags

Currently we cannot use {!join …} filter queries together with tags. Unclear whether this is a Solr or Solarium problem. So avoid using tags unless they are strictly necessary.

https://github.com/basdenooijer/solarium/issues/177
Fix markup problem in form