* Updated config path to specify metadata storage path
* Removed metadata column from DB, replacing it with filepath columns
* Updated app to store compressed metadata; automatically download thumbnails
* Ensured metadata is deleted when other files are deleted
* Updated docs
* Added inets to application start so http calls work in prod
* Updated project to use sqlite
* Edited migrations directly because I fear no man
* Updated search functions and tests to work with sqlite
* Updated build tools to remove postgres
