I have a quick little suggestion, as you have mentioned the Banner/BG image process. Why not add a small script that will upload it to the server or any image hosting website out there. For example, LightShot uploads screanshots to imgur and some other places. This will make it faster for image changes and easier on users with little to basic knowledge.
That would be useful. I'll look into it.
EDIT: Added first feature in some time!
First, go to the admin panel and add in some of your jail maps:
As you can see, the list automatically adds new fields.
Verify that your mapID looks right:
Before:
After applying settings:
Hey, looks like we caught a pesky user that was warping out from jail!
As always, you can grab the latest version here:
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This update accommodates for servers that use more than one jail map. Using one mapID only will result in the expected results.
If you'd like to see what I changed, you can view this changelog:
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Special thanks to a post on stackoverflow which explained how to add new fields via jquery (I'm not all that proficient with it, but now it makes sense!)