couldn't be succesfully loaded
* gnoemoe/gm-editor.c: allways write \n (also on last line)
* gnoemoe/gm-options.c: set file path even if it couldn't be
loaded so that when there is no options file it will be
saved correctly. return false when loading fails
* gnoemoe/widgets/gm-external-view.c: use default gnome
terminal when terminal is needed
* gnoemoe/widgets/gm-world-tab.c: fix tab close button