document: Revert 6f5d5db2 and d6d4728f

Now that there is a proper user indication for the "maintain history on
reload" feature we can toggle it on by default. The setting is also renamed
so that the default is effective for everyone (this was the plan).

doc/geany.txt

@@ -2652,7 +2652,7 @@ use_gio_unsafe_file_saving        Whether to use GIO as the unsafe file        t
                                   correctly on some complex setups.
 gio_unsafe_save_backup            Make a backup when using GIO unsafe file     false       immediately
                                   saving. Backup is named `filename~`.
-keep_edit_history_on_reload_125   Whether to maintain the edit history when    false       immediately
+keep_edit_history_on_reload       Whether to maintain the edit history when    true        immediately
                                   reloading a file, and allow the operation
                                   to be reverted.
 **Filetype related**

src/keyfile.c

@@ -234,7 +234,7 @@ static void init_pref_groups(void)
 	stash_group_add_boolean(group, &file_prefs.use_gio_unsafe_file_saving,
 		"use_gio_unsafe_file_saving", TRUE);
 	stash_group_add_boolean(group, &file_prefs.keep_edit_history_on_reload,
-		"keep_edit_history_on_reload_125", FALSE);
+		"keep_edit_history_on_reload", TRUE);
 	stash_group_add_boolean(group, &file_prefs.show_keep_edit_history_on_reload_msg,
 		"show_keep_edit_history_on_reload_msg", TRUE);
 	/* for backwards-compatibility */