shiftWishesApp.js, wishlist table migration, ShiftplansController (getWishlist, postWishlist)
	- shiftWishesApp.js to select days on wich one prefers or doesn't prefers to workshiftWishesApp.js, wishlist table migration, ShiftplansController (getWishlist, postWishlist)
        - shiftWishesApp.js to select days on which one prefers or doesn't prefer to work
        - wishlist table stores the list of preferences JSON object as text
        - getWishlist returns list of prefrences if exist in DB
        - postWishlist stores or updates list of prefrences record in DB

        - small changes in shiftPlanerApp.js