added loading icon to save, changed dialog message
dialogbox bugfix
added field isDefault to catalogue
changed mapping format to xml
implemented tests and fix tests  catalogue.isDefault
fixed tests catalogue.isDefault
added suggestion to getAllTranslations
removed testGetAll
added validation for unique code
fixed catalogue.isDefault in export and import test
removed debug comment
fixed #15 revalidation (unique)
excluded translations in package serialization
added default language to template
changed parameter name for isDefault
added functionality for selecting default language
added suggestions to the translations
removed debugging comment
Merge pull request #16 from massiveart/feature/translation-validation

Feature/translation validation
merged with develop