Fold varnishstat ncurses top/bottom bindings

They have the same effect in practice despite looking different, so the
simpler option is kept. Also considering vi key bindings <j> and <k>
documented in the previous commit, <g> and <G> would definitely have the
same meaning as <HOME> and <END> in this context.

bin/varnishstat/varnishstat_curses.c

@@ -896,9 +896,11 @@ handle_keypress(int ch)
 			page_start += l_points;
 		break;
 	case KEY_HOME:
+	case 'g':
 		current = 0;
 		break;
 	case KEY_END:
+	case 'G':
 		current = n_ptarray - 1;
 		break;
 	case 'd':
@@ -909,14 +911,6 @@ handle_keypress(int ch)
 		scale = 1 - scale;
 		rebuild = 1;
 		break;
-	case 'g':
-		current = 0;
-		page_start = 0;
-		break;
-	case 'G':
-		current = n_ptarray - 1;
-		page_start = (current - l_points) + 1;
-		break;
 	case '+':
 		interval += 0.1;
 		(void)snprintf(notification_message, NOTIF_MAXLEN,

doc/sphinx/reference/varnishstat.rst

@@ -85,10 +85,10 @@ The following keys control the interactive display:
 <PAGEDOWN> or <SPACE> or <CTRL-f>
 	Navigate the counter list one page down.
 
-<HOME>
+<HOME> or <g>
 	Navigate the counter list to the top.
 
-<END>
+<END> or <G>
 	Navigate the counter list to the bottom.
 
 <d>
@@ -99,12 +99,6 @@ The following keys control the interactive display:
 <e>
 	Toggle scaling of values.
 
-<g>
-	Go to the top of the counter list.
-
-<G>
-	Go to the bottom of the counter list.
-
 <v>
 	Increase verbosity. Defaults to only showing informational
 	counters.