[JW Lua] JW Lua window functionality improvements

[Jan Angermüller]

After working a little bit more with JW Lua, I have some suggestions for 
improvements
on the JW Lua window functionality.

- Ctrl-F (or Alt-F): Please insert a simple text search function to be 
able to browse the code faster.
If it gets longer and longer (more than 1000 lines), it takes quite some 
time to find the right function.
Idea: Just open a dialog with one text field, a search button (=ok) and 
a cancel button

- On Finale/Windows: Map Alt-S (for save) and the other menu functions 
to Ctrl-... which is more common on Windows.  Or does that interfere 
with the Finale standard "Save" functionality ?

- To be able to make the JW Lua window as big as 1920x1080 screen size 
(or whatever big screen size you have). Currently the maximum size I can 
get is about 1108x824 on my 1920x1080 screen.

- when closing a Finale file (i.e. the score, not the JW Lua plugin), 
the JW Lua plugin closes as well - currently without asking if the 
changes should be saved. So changes in the plugin code will be lost, 
when closing the score file. Is it possible to ask "Save changes ?" 
within the plugin, when the score file is to be closed ?

- And one more suggestion for the UI/environment variables: Give access 
to the standard Finale directories. E.g. to be able to find the 
"PercNoteTypes.txt" automatically

Best,
Jan