Create a bare-bones AdminGuiFrame

This is essentially straight from WindowBuilder, with a few
modifications (e.g. removing the auto-generated main method).
AGF: Add OIS/OOS to constructor and add fields
AGF: Add three tabs

Specifically:
- Added JTabbedPane to CENTER of contentPane
- Added three JPanels to tabbedPane
- Set variable names and user-readable tab names for each panel
- Added comments as to the planned role of each tab
AGF: Set JFrame title to "Results Wizard"
AGF: Set configPanel and systemPanel to vertical BoxLayout

inputPanel's GUI will be a bit more complicated (I'm thinking of a list
box containing the slides with a column of buttons on the side), so I'm
not messing with it for now.
AGF: Populate the Configuration tab

Adding listeners for this stuff will come later. I'll be focusing on
designing the UX before attaching it to the rest of the app.
AGF: Populate the System Options tab