Add slight indication on receipt total of if the receipt is active
Adds receipt restore on clerk login

* Adds templated BootStrap Dialog and DateTimeFormatter
* Fixed reading clerk login error message.
Allow entering payment multiple times.
Larger first line on receipt.
Don't start receipt if first item cannot be found.
Don't start receipt even if the code is right, but is not available
Adds receipt finding and printing support
Display rounded value only if rounding happens
Fix item adding