If a scripter script has been saved, using the Run action causes scripter to load and run the script from its associated file - even if there are unsaved changes in the script window. 

To reproduce:
start scripter
file->new script 
print("hello")
file-> save (choose filename and save)
press Run/Ctrl-R:

======================================
hello

add to edit window:
print("world")
press Run/Ctrl-R:

======================================
hello


That is, "world" is not printed, despite being in the edit window. This is because saving the document sets _activeDocument flag and that causes the script to load directly from the file. 

There are different approaches to solving this
* add a dirty flag to the edit box and check that, put a dialog up to query saving before running - or visual indicator that script has been changed or 
toolbar warning that running script from file
* automatically save edit window before running (or have this as an option in settings)
* have separate actions save+run (... from the file) and run (...from the editor window)
* have separate actions run from file, run from editor (manual saving)
* have a "run-from-file" mode which doesn't display the edit window - or makes it read only?
* run only script in window
* some combination

I personally would like to be able to run scripts directly from the file - so that I can use a different editor.

Wanted feedback on UI before diving into patching.