[Add Files Dialog] When Tabbing after selecting library from IntelliSense, pop-up pops up twice

[justcla]

Once to refresh the library list, then again to show just the versions.
- Noticed on bootstrap

[jimmylewis]

The way this currently seems to manifest:

1. Start typing a name in the library id text box
2. Commit an item from the completion dropdown
3. Name and version are automatically completed, caret is placed at the end of the library name
4. Completion popup remains active (or reopens) saying "No matches found"

It seems like the correct behavior should be to keep the dropdown collapsed, and have it retrigger when the user makes further edits.