Alter database structure

 - remove versions and pages tables
 - add translatable_elements, package_structure & page_structure
Remove image_resolutions, for now
Run migration for packages, languages and translations
Add domain classes to map to package_structure and page_structure
Migrate `PageStructure` and `PackageStructure`
translation_elements now migrated for the English (base) translation
Migration working, but not 100% correct

 - need to go file by file and handle each element..
Migration process which correctly associates translated elements to correct element ID
Save page name and display order
save package structure id on page structure rows
Make sure the package structure is the english version..
WIP / attempting to communicate with OneSky
Upload to OneSky works!
Updating project ID
Organizing methods a little bit better

 - add console debugging to determine status code of response
Fixed up Meta endpoint again to use the database structure

 - and cleaned up the code structure a good bit too.
WIP reloading the translations endpoint
Cleaning up WIP compiler errors'
file upload to OneSky works
cleaning up unused imports