* HACKING:
added information on best practices for writing application messages and GUI labels

* src/CORBA-Server.c, src/about.c, src/anjuta.c, src/breakpoints.c, src/build_file.c, src/build_project.c, src/clean_project.c, src/compile.c, src/compiler_options_cbs.c, src/compiler_options_gui.c, src/configurer.c, src/debugger.c, src/executer.c, src/find_in_files.c, src/find_in_files_cbs.c, src/find_replace.c, src/find_text.c, src/glades.c, src/gnome_project.c, src/goto_line.c, src/main.c, src/main_menubar.c, src/main_menubar_def.h, src/mainmenu_callbacks.c, src/preferences_gui.c, src/project_config.c, src/project_dbase.c, src/project_dbase_gui.c, src/resources.c, src/source.c, src/support.c, src/tags_manager.c, src/text_editor.c, src/text_editor_gui.c, src/text_editor_menu.c, src/toolbar_callbacks.c, src/utilities.c:
lots of minor message updates to make them more user-friendly and consistent