Fix: Product list for sale was sending product_version_id instead of version_id this was borking on products with multiple versions
Change: Update Product Prices initially does not show list. Only the date and Menu Category List
Removed the loading bar component as it was giving build troubles and can be added back later
Added the HttpClientModule import to app.module without which it will not run
Auth guard and auth service simplified and fixed so that user is updated upon login
Home component changed to use square buttons
Fixed showing the totals in the bill
ng linted the project
Fix: DiscountLimit was not scaled to 100 in MenuCategory detail. So it is now chaled in the json and scaled back in the frontend for the list as that was not supposed to be scaled.
Feature: Modifier is now done
Fix: In product save, it was checking menu_category second time again instead of sale_category
They are also linked to products / menu categroies as to which products they can be used on
The linking to menu categories is done in the frontend, database is linked directly to products
Treeview for menu categories yet to be done in modifier category detail form
Extracted Product Group -> Group_type to a a new object called Sale Category.
Moved tax from product to Sale Category for uniform taxes on types of sales.
