Added javadoc to all methods and class names that

...o/ntnu/idatt1002/demo/controller/AddBudgetController.java

.../ntnu/idatt1002/demo/controller/AddExpenseController.java

...o/ntnu/idatt1002/demo/controller/AddIncomeController.java

.../ntnu/idatt1002/demo/controller/AllRecipesController.java

...tnu/idatt1002/demo/controller/CreateBudgetController.java

...u/idatt1002/demo/controller/IngredientTileController.java

...tnu/idatt1002/demo/controller/SelectBudgetController.java

...n/java/no/ntnu/idatt1002/demo/data/Budget/BudgetItem.java

...va/no/ntnu/idatt1002/demo/data/Budget/BudgetRegister.java

...idatt1002/demo/data/Budget/FileHandlingBudgetArchive.java

...datt1002/demo/data/Budget/FileHandlingSelectedBudget.java

...ava/no/ntnu/idatt1002/demo/data/Budget/GeneralBudget.java

src/main/java/no/ntnu/idatt1002/demo/data/Budget/MMBI.java

...main/java/no/ntnu/idatt1002/demo/data/Budget/Savings.java

...n/java/no/ntnu/idatt1002/demo/data/Economics/Expense.java

...o/ntnu/idatt1002/demo/data/Economics/ExpenseCategory.java

...a/no/ntnu/idatt1002/demo/data/Economics/FileHandling.java

...in/java/no/ntnu/idatt1002/demo/data/Economics/Income.java

...no/ntnu/idatt1002/demo/data/Economics/IncomeCategory.java

...main/java/no/ntnu/idatt1002/demo/data/Economics/Item.java