allow Q key to quit on any page

tui/main.cpp

@@ -78,7 +78,7 @@ void mainmenu(WINDOW *window) {
   mvwaddstr(window, 5, 2, "3. Wireless");
 
   cyan(window);
-  mvwaddstr(window, 7, 2, "0. Quit");
+  mvwaddstr(window, 7, 2, "q. Quit");
 
   magenta(window);
   mvwaddstr(window, 9, 2, "Enter selection: ");
@@ -88,7 +88,9 @@ void mainmenu(WINDOW *window) {
   char c = getch();
 
   if(c < '0' || c > '3') {
-    mainmenu(window);
+    if(c != 27 && c != 'q') { // allow escape in addition to 0 for quit
+      mainmenu(window);
+    }
   }else{
     if(c == '1') {
       interfaceMenu(window);
@@ -157,10 +159,12 @@ void arpMenu(WINDOW *window) {
 arpChar:
   char c = getch();
 
-  if(c != '0') {
+  if(c != '0' && c != 27 && c != 'q') {
     goto arpChar;
   }else{
-    mainmenu(window);
+    if(c != 'q') {
+      mainmenu(window);
+    }
   }
 }
 
@@ -202,13 +206,16 @@ void interfaceMenu(WINDOW *window) {
   mvwaddstr(window, y + 1, 2, "0. Back to main menu");
 
   magenta(window);
-  mvwaddstr(window, y + 3, 2, "Enter selection: ");
+  mvwaddstr(window, y + 3, 2, "q. Quit");
+  mvwaddstr(window, y + 5, 2, "Enter selection: ");
   wrefresh(window);
 
   char c = getch();
 
   if(c < '0' || c > lastInterface) {
-    interfaceMenu(window);
+    if(c != 'q') {
+      interfaceMenu(window);
+    }
   }else{
     if(c == '0') {
       mainmenu(window);
@@ -272,8 +279,7 @@ void interfaceSelect(WINDOW *window, QString interface) {
 
   if(c < '0' || c > (count + '0' - 1)) {
     if(c == 'q') {
-      quit(window);
-      exit(0);
+      // no-op, just quit
     }else if(c == 'a') {
       wdeleteln(window);
       mvwaddstr(window, y + 7, 2, "Enter IP address to add: ");