Uniform error handling

[CannonLock]

• Add error helpers for api calls
• Create Uniform error handling and alerting interface
  • This is extensible to report many errors and complex errors to the user
• Moved all error handling to the new interface

Couple things that will make this a better path forward.

• Uniform interface makes error reporting the same on each page.
  • Easier to implement for dev, easier to find for users.
  • Same function wraps all backend calls so we can do bulk handling of functionality.
• Design allows for saving errors to pull up later ( Not yet implemented )
  • This will help if for some reason there is multiple errors in a row

Closes #1582

[CannonLock]

Removing error alerts that look like the top image in favor of potentially infinitely nested ones that look like below.

[h2zh]

Could you take a further look at this problem?

[CannonLock]

Had to close another issue when implementing the auth'd registry pages.

Closes #1728

[h2zh]

There's a failed Ubuntu test, could you take a second look when you have a chance

[CannonLock]

@h2zh Do you have any insights into the failure? This is a UI only change so it shouldn't effect any of the pelican tests unless the web build itself failed which I know isn't the case.

[jhiemstrawisc]

@h2zh Do you have any insights into the failure? This is a UI only change so it shouldn't effect any of the pelican tests unless the web build itself failed which I know isn't the case.

@CannonLock, this is a known bad test at this point. If the failing localcache test is all that's blocking you, feel free to disregard it.