Improve Add from Library buttons (Authoring MFE - Unit Page)

[bradenmacdonald]

Update the various buttons for adding library content to a unit, in the authoring MFE.

Currently it looks like this:

But it should be more like the legacy unit page:

Changes:

1. Fix the "Problem Bank" button:
   a. Make sure it works (it adds an itembank component). Currently, nothing happens when it's clicked.
   b. Ensure it is only visible if v2 libraries are enabled.
   c. Use the correct icon (Paragon's casino icon)
   d. Add the "beta" label
2. Fix the "Library Content" button:
   a. Make sure it works (display a modal to choose multiple items, add them to the course with upstream_ref set - see legacy UI behavior and copy that)
   b. Ensure it is only visible if v2 libraries are enabled.
   c. Use the correct icon (newsstand - may need to add to Paragon)
   d. Add the "beta" label
3. Fix the "Legacy Library" button:
   a. Ensure it is hidden if v1 libraries are disabled.

Note: 2a is potentially quite a large item so I suggest doing it in its own PR, separate from the other changes. However, don't spend a ton of time on it, as we'll be overhauling the entire workflow in Epic 7.

Note 2: we are not changing the color of the buttons.

[bradenmacdonald]

@jmakowski1123 @sdaitzman FYI - please review this new ticket.

[jmakowski1123]

cc @GlugovGrGlib for visibility. These are small additions being made to the new unit page MFE.

[jmakowski1123]

@bradenmacdonald We'd also like to introduce a new auto order to the component block tiles. See below. Could that be part of this story, or should be a separate story?

Text
Video
Problem
Problem bank beta
Library content
Legacy Libraries (if applicable)
Discussion
Open response
Drag and Drop
Advanced

[bradenmacdonald]

@jmakowski1123 What do you mean by "auto order"? If it's just a new order that's fixed, we can include the change in this story. But if you mean something more dynamic, let's make a separate story.

[jmakowski1123]

I just mean a new order that's fixed. That order should be: (based on logic of which blocks are most commonly used and which blocks are closely related)

Text
Video
Problem
Problem bank beta
Library content
Legacy Libraries (if applicable)
Discussion
Open response
Drag and Drop
Advanced

[navinkarkera]

@jmakowski1123 @lizc577 @sdaitzman @marcotuts This is ready for AC testing on the sandbox

[sdaitzman]

Looks good to me!