help: pull "Older" and "Newer" into view on an 80-column terminal

The ^P and ^N keystrokes for Older and Newer are relevant to searching
and should be visible in the help lines.  FullJustify, paragraph jumps,
and top/tail jumping are there only for compatibility with Pico but
don't make any sense there, so it's no problem if they are pushed out
of view.

src/global.c

@@ -817,6 +817,12 @@ void shortcut_init(void)
 	add_to_funcs(flip_replace, MREPLACE,
 		N_("No Replace"), WITHORSANS(whereis_gist), BLANKAFTER, VIEW);
 
+#ifdef ENABLE_HISTORIES
+	add_to_funcs(get_history_older_void, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
+		N_("Older"), WITHORSANS(older_gist), TOGETHER, VIEW);
+	add_to_funcs(get_history_newer_void, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
+		N_("Newer"), WITHORSANS(newer_gist), BLANKAFTER, VIEW);
+#endif
 #ifdef ENABLE_JUSTIFY
 	add_to_funcs(do_full_justify, MWHEREIS,
 		N_("FullJstify"), WITHORSANS(fulljustify_gist), TOGETHER, NOVIEW);
@@ -988,12 +994,6 @@ void shortcut_init(void)
 	add_to_funcs(do_savefile, MMAIN,
 		N_("Save"), WITHORSANS(savefile_gist), BLANKAFTER, NOVIEW);
 #endif
-#ifdef ENABLE_HISTORIES
-	add_to_funcs(get_history_older_void, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
-		N_("Older"), WITHORSANS(older_gist), TOGETHER, VIEW);
-	add_to_funcs(get_history_newer_void, MWHEREIS|MREPLACE|MREPLACEWITH|MWHEREISFILE,
-		N_("Newer"), WITHORSANS(newer_gist), BLANKAFTER, VIEW);
-#endif
 
 #ifndef ENABLE_JUSTIFY
 	add_to_funcs(flip_goto, MWHEREIS,