added header to ingredient-creator; in the shopping list flipStatus works and checkboxes are still checked after switching pages

added app icon, added "back" button to recipe creator. now creating recipes and adding them to the recipe manager

refactoring RecipeSearch, slight visual changes, now selecting ingredients in recipe creator and validating number inputs

Split GUI and the model into two classes. File manager is now fully implemented. the branch will be merged with main

Deserialize methods in FileManager now take the JSON string as parameter. Fixed bug where empty files would cause NullPointerExceptions. All classes now work depend on an instance of TastyPages instead of static class members in TastyPages

Categories, recipes and ingredients now saved in hashmap together with their associated code and a whole bunch of refactoring to go along with it. TypeAdapters for Recipes, NutritionTables and Categories. Saving and retrieving Recipe, NutritionTable and Category to / from JSON works (see tests).

simplified NutritionTable equals() method. created component classes for RecipeTile and CategoryCheckBox

started moving dependencies to TastyPages class. Colour codes for categories are now saved in a string. recipe search by category works now, including UI updates

introducing components: a way to reuse elements in different scenes. modified the Main view to fetch recipes and add them to the UI

abstract class BaseController, figuring out dependency injection into JavaFX controllers, added enum View.java to get correct Scene object (with correct constructor)

added BaseController that stores FXML files for all views, started bugfixing for equals methods, started working on recipe view fxml file