Added and updated some javadoc

.idea/misc.xml

.../java/ntnu/idatt2016/v233/SmartMat/config/CorsConfig.java

...a/ntnu/idatt2016/v233/SmartMat/config/SecurityConfig.java

...3/SmartMat/config/authentiation/AuthenticationConfig.java

...t2016/v233/SmartMat/config/properties/DomainProperty.java

...idatt2016/v233/SmartMat/controller/AllergyController.java

...16/v233/SmartMat/controller/AuthenticationController.java

.../idatt2016/v233/SmartMat/controller/RecipeController.java

...2016/v233/SmartMat/controller/ShoppingListController.java

...tt2016/v233/SmartMat/controller/WeeklyMenuController.java

...2016/v233/SmartMat/controller/group/FridgeController.java

...t2016/v233/SmartMat/controller/group/GroupController.java

...t2016/v233/SmartMat/controller/group/WasteController.java

...6/v233/SmartMat/controller/product/ProductController.java

.../v233/SmartMat/controller/user/AchievementController.java

...att2016/v233/SmartMat/controller/user/UserController.java

...ava/ntnu/idatt2016/v233/SmartMat/dto/enums/Authority.java

...t2016/v233/SmartMat/dto/request/FridgeProductRequest.java

...tnu/idatt2016/v233/SmartMat/dto/request/LoginRequest.java

...u/idatt2016/v233/SmartMat/dto/request/ProductRequest.java