Script Info -> Slot Info

The "Assign Compiled Script" window has two buttons with the exact same name. This could potentially create confusion for novice scripters: "wait, which 'Script Info' button do I press? Do they both do the same thing?".

Steps to recreate:

1. ZScript->Compile ZScript...
2. Click 'Compile'
3. Click 'OK' in ZScript Parser window
4. Observe "Script Info" buttons to the left and right of the "Clear" button

Consider renaming the left button to "Slot Info"

(Also consider greying out the button when an empty slot/script is selected.)

The "Script Info" strings come from assignscript_dlg array in zquest.cpp