Edge browser: show edit component based on the invitation spec

[melisabok]

Remove the code:

    switch (editInvitation.name) {
      case 'Paper Assignment':
        editEdgeWidget = (
          <EditEdgeToggle
            isAssigned={metadata.isAssigned}
            addEdge={addEdge}
            removeEdge={removeEdge}
          />
        )
        editEdgeWidgetPosition = 1
        break

      case 'Recommendation':
        editEdgeWidget = (
          <EditEdgeDropdown
            label={editInvitation.name}
            isAssigned={metadata.isAssigned}
            options={editInvitation.weight['value-dropdown']}
            selected={editEdge.weight}
            default=" "
            addEdge={addEdge}
            removeEdge={removeEdge}
          />
        )
        editEdgeWidgetPosition = 2
        break

      default:
        break
    }

and create the component based on the invitation weight or label spec.

If value-dropdown then use EditEdgeDropdown
If value-radio then implement a widget to render the options as buttons(?) or use a dropdown too.
default should be EditEdgeToggle

[xkopenreview]

it looks like content.label from the edit invitation is not used at all

[melisabok]

If the edit invitation is like the Bid Invitation, then we should read the label.

[xkopenreview]

the main purpose for now is to support 3 kinds of edit invitations:

1. Bid - may have label with type value-radio in invitation
2. Recommendation - may have weight with value-dropdown in invitation
3. Paper_Assignments - may have label with value-regex or weight with value-regex or label+weight with value-regex

the logic to decide the control to render is:

	Label only	Weight only	Label+Weight	None
value-radio	EditEdgeDropdown	EditEdgeDropdown	EditEdgeDropdown 2x	EditEdgeToggle
value-dropdown	EditEdgeDropdown	EditEdgeDropdown	EditEdgeDropdown 2x	EditEdgeToggle
value-regex	EditEdgeToggle	EditEdgeToggle	EditEdgeToggle	EditEdgeToggle
may expand later	TBD	TBD	TBD	TBD

when an EditEdgeToggle is rendered, the label text following the editEdge param in URL should be the label when creating a new edge.

if the invitation has only label field and specified value-regex, check if the url has the label, if not ui should render an input to collect label from user. if url has label, it should be used to the label in new edge created.

[xkopenreview]

let's say we are rendering a dropdown for label and a dropdown for weight and the edit invitation in URL has specified label:some label.

when adding an edit edge, should the label be fixed to the label in url or allow selection of label?

[melisabok]

If the label is present in the url then I wouldn’t render the widget and use that value to post all the edges.

[zbialecki]

Changes we discussed on today's call:

• support multiple edit edges from 1 invitation
• support multiple edit invitations
• support traverse and edit invitations being different

[xkopenreview]

I think i will split the editEdge to two properties:
1: editEdges - existing edges that can be deleted or modified(has id)
2: editEdgeTemplate - the edge created from edit invitation (has no id)