Allow guests to use of arsenal limits dialog and set default guest limit to 0

[jaj22]

What type of PR is this.

1. Bug
2. Change
3. Enhancement

What have you changed and why?

See #3230. Flipped the use of the arsenal limits dialog so that the default guest limit is 0 and commanders need to intentionally block removal of items from the arsenal. Enabled guest commanders to use the arsenal limits dialog to increase (but not decrease) limits, so that they can manage unlocking.

Please specify which Issue this PR Resolves.

closes #3230

Please verify the following and ensure all checks are completed.

1. Have you loaded the mission in LAN host?
2. Have you loaded the mission on a dedicated server?

Is further testing or are further changes required?

1. No
2. Yes (Please provide further detail below.)

IIRC the arsenal limits dialog doesn't work correctly in all resolutions and UI size settings, so I may need to sort that out if use of the dialog becomes more critical.

How can the changes be tested?

Make yourself a guest in localhost:

membersX = [];
membershipEnabled = true;

[jaj22]

Added save & load of arsenal limits data. Should have been there ages ago.

[ante185]

lgtm imo

[jaj22]

• Ported arsenal limits dialog to Antistasi GUI style.
• Changed logic to store last member-set value and constrain to that. Guests can now reduce guest-set values.

@ante185 Probably needs a second look.

[ante185]

Yep looks good still