community news dock widget and other user info in GUI * news-dock-widget.h, news-dock-widget.cc: New files. * libgui/src/module.mk: Update file lists. * configure.ac: Check for QtWebKit module. * default-qt-settings.in: Update default geometry. * main-window.cc, main-window.h (main_window::news_window): New data member. (main_window::dock_widget_list): Include it in the list. (main_window::display_release_notes, main_window::display_url_in_window, main_window::construct_news_menu): New functions. (main_window::construct): Add news_window dock widget. (main_window::construct_menu_bar): Call construct_news_menu. (main_window::construct_window_menu): New items for Showing news window and menu.

gnulib-hg = gnulib-hg