Option to turn individual GUI dialogs on/off

[davidrg]

Right now GUI dialogs in K95G are an all-or-nothing situation. The set gui dialogs command (GUI_DIA) just takes an on or off, setting the global gui_dialog on or off. This governs at least the following:

• uq_ok (message-box)
• uq_txt (user query, single line text response including passwords)
• uq_mtxt (user query, multiple single line text responses)
• uq_file (get file or directory name)

It might be nice if you could turn some of these on/off individually. Eg, a GUI dialog for saving/loading files, text-mode popups for entering usernames and passwords, etc.