English string changes in r1908

[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 r1908 are:
Strings which have been removed:
options_window.change_resolution
tooltip.options_window.change_resolution
Strings which have been added:
options_window.apply
options_window.caption
options_window.data_location
options_window.language
options_window.option_off
options_window.option_on
options_window.resolution
tooltip.options_window.apply
tooltip.options_window.data_location
tooltip.options_window.fullscreen
tooltip.options_window.language_dropdown_item
tooltip.options_window.resolution
tooltip.options_window.select_language