English string changes in r2420

[cor...@corsix.org]

This is an automated message to notify translators that changes have been made
to the English translation file, which usually indicates that equivalent
changes should be made to the other translation files. The changes in r2420 are:
Strings which have been removed:
menu_options.settings
options_window.browse
options_window.data_location
options_window.font_location
options_window.new_th_directory
tooltip.options_window.browse
tooltip.options_window.browse_font
tooltip.options_window.data_location
tooltip.options_window.font_location
tooltip.options_window.no_font_specified
tooltip.options_window.original_path
Strings which have been added:
confirmation.music_warning
customise_window.aliens
customise_window.average_contents
customise_window.back
customise_window.caption
customise_window.fractured_bones
customise_window.intro
customise_window.movies
customise_window.option_off
customise_window.option_on
customise_window.paused
customise_window.volume
errors.alien_dna
errors.fractured_bones
folders_window.back
folders_window.caption
folders_window.data_label
folders_window.font_label
folders_window.music_label
folders_window.music_location
folders_window.new_th_location
folders_window.savegames_label
folders_window.savegames_location
folders_window.screenshots_label
folders_window.screenshots_location
install.cancel
install.ok
menu_options.announcements
menu_options.music
menu_options.sound
options_window.audio
options_window.customise
options_window.folder
tooltip.customise_window.aliens
tooltip.customise_window.aliens_button
tooltip.customise_window.average_contents
tooltip.customise_window.average_contents_button
tooltip.customise_window.back
tooltip.customise_window.fractured_bones
tooltip.customise_window.fractured_bones_button
tooltip.customise_window.intro
tooltip.customise_window.intro_button
tooltip.customise_window.movies
tooltip.customise_window.movies_button
tooltip.customise_window.paused
tooltip.customise_window.paused_button
tooltip.customise_window.volume
tooltip.customise_window.volume_button
tooltip.folders_window.back
tooltip.folders_window.browse
tooltip.folders_window.browse_data
tooltip.folders_window.browse_font
tooltip.folders_window.browse_music
tooltip.folders_window.browse_saves
tooltip.folders_window.browse_screenshots
tooltip.folders_window.data_location
tooltip.folders_window.default
tooltip.folders_window.font_location
tooltip.folders_window.music_location
tooltip.folders_window.no_font_specified
tooltip.folders_window.not_specified
tooltip.folders_window.savegames_location
tooltip.folders_window.screenshots_location
tooltip.options_window.audio_button
tooltip.options_window.audio_toggle
tooltip.options_window.customise_button
tooltip.options_window.folder_button