allow sat-pref-rig and sat-pref-rot to access nbook (mod-mgr.c) as an extern variable
added functions conf_open_in_rigctrlwin and conf_open_in_rotctrlwin
added dailog boxes displaying when the error occurs
prevent user from editing rig/rot configurations when a control window is open
This is in response to an issue where, if the user opens an editor while the respective control window is also open, then the call to the radio/rotor_conf_save function when the control window is closed overwrites changes made in the editor.
This is in response to an issue where, if the user opens an editor while the respective control window is also open, then the call to the radio/rotor_conf_save function when the control window is closed overwrites changes made in the editor.