Add database Config.java to provide a single global entitymanager

.gitignore

Album.pdf

import.sql.gz

src/main/java/NTNU/IDATT1002/App.java

src/main/java/NTNU/IDATT1002/ApplicationState.java

src/main/java/NTNU/IDATT1002/controllers/CreateAlbum.java

src/main/java/NTNU/IDATT1002/controllers/DataExchange.java

src/main/java/NTNU/IDATT1002/controllers/ExploreAlbums.java

src/main/java/NTNU/IDATT1002/controllers/Login.java

src/main/java/NTNU/IDATT1002/controllers/SignUp.java

src/main/java/NTNU/IDATT1002/controllers/UploadedSingle.java

src/main/java/NTNU/IDATT1002/controllers/ViewAlbum.java

...ain/java/NTNU/IDATT1002/database/EntityManagerConfig.java

src/main/java/NTNU/IDATT1002/database/LoadDatabase.java

src/main/java/NTNU/IDATT1002/models/GeoLocation.java

src/main/java/NTNU/IDATT1002/models/Histogram.java

src/main/java/NTNU/IDATT1002/models/Image.java

src/main/java/NTNU/IDATT1002/models/ImageAlbum.java

src/main/java/NTNU/IDATT1002/models/Login.java

src/main/java/NTNU/IDATT1002/models/Metadata.java