Circulation Rules Editor - Integrate Institution Menu

Purpose:
Integrate Institution menu to the circulation rules editor (This is Scenario 1 of UICIRC-258).

The full description and purposes can be found in the issue UICIRC-258.

Scenario 1: Institution selection

• Given the circulation rule editor
• When adding/editing a new circulation rule and
• When editing the attributes section of the rule (i.e., before a colon ':' has been entered on the line)
• When typing a following a space
• Then display in the editor a menu that contains the configured list of Institutions
• When clicking any individual Institution Code entry (e.g., DUK)
• Then close the menu and the entry should appear in the editor on the rule line in the form:

  a DUK

*Note: when selected codes are written to the rule line, the editor should ensure that a space exists between the attribute syntax (a) and the chosen code, either as entered by the user or padded as part of installing the chosen code.

**Note: See attached menu wireframes (The Institution (a) menu is relevant for this story)