Improve I18N Issues (Based on 4.6)

I fully localized this great plugin to zh_TW, and I found several unnecessary colons which need to be removed.

The following is modified code. WP-BrowserUpdate.php, Line 115

echo '</select> <a  title="'.__('Download', 'wp-browser-update').'" target="_blank">'.__('Download', 'wp-browser-update').'</a></p><h3>'.__('Script Customizations', 'wp-browser-update').'</h3><p>'.__('After how many hours the message should re-appear (0 = Show all the time):', 'wp-browser-update').'<br /><input type="number" value="'.$wpbu_reminder.'" name="wpbu_reminder" min="0" max="99" step="1" required placeholder="(min: 0, max: 99)" /></p><p>'.__('Open link on notification bar in a new browser window/tab:', 'wp-browser-update').'<br /><select name="wpbu_newwindow"><option value="true"'.($wpbu_newwindow=='true' ? ' selected="selected"' : '').'>'.__('Yes', 'wp-browser-update').'</option><option value="false"'.($wpbu_newwindow=='false' ? ' selected="selected"' : '').'>'.__('No', 'wp-browser-update').'</option></select></p><p>'.__('Always show notification bar (for testing purposes):', 'wp-browser-update').'<br /><select name="wpbu_testing"><option value="true"'.($wpbu_testing=='true' ? ' selected="selected"' : '').'>'.__('Yes', 'wp-browser-update').'</option><option value="false"'.($wpbu_testing=='false' ? ' selected="selected"' : '').'>'.__('No', 'wp-browser-update').'</option></select></p><p>'.__('Position where the notification will be displayed:', 'wp-browser-update').'<br /><select name="wpbu_style"><option value="top"'.($wpbu_style=='top' ? ' selected="selected"' : '').'>'.__('Top', 'wp-browser-update').'</option><option value="bottom"'.($wpbu_style=='bottom' ? ' selected="selected"' : '').'>'.__('Bottom', 'wp-browser-update').'</option><option value="corner"'.($wpbu_style=='corner' ? ' selected="selected"' : '').'>'.__('Corner', 'wp-browser-update').'</option></select></p><p>'.__('Notify all browser versions with severe security issues:', 'wp-browser-update').'<br /><select name="wpbu_secis"><option value="true"'.($wpbu_secis=='true' ? ' selected="selected"' : '').'>'.__('Yes', 'wp-browser-update').'</option><option value="false"'.($wpbu_secis=='false' ? ' selected="selected"' : '').'>'.__('No', 'wp-browser-update').'</option></select></p><p>'.__('Also notify all browsers that are not supported by the vendor anymore:', 'wp-browser-update').'<br /><select name="wpbu_unsup"><option value="true"'.($wpbu_unsup=='true' ? ' selected="selected"' : '').'>'.__('Yes', 'wp-browser-update').'</option><option value="false"'.($wpbu_unsup=='false' ? ' selected="selected"' : '').'>'.__('No', 'wp-browser-update').'</option></select></p><p>'.__('Notify mobile browsers:', 'wp-browser-update').'<br /><select name="wpbu_mobile"><option value="true"'.($wpbu_mobile=='true' ? ' selected="selected"' : '').'>'.__('Yes', 'wp-browser-update').'</option><option value="false"'.($wpbu_mobile=='false' ? ' selected="selected"' : '').'>'.__('No', 'wp-browser-update').'</option></select></p><p>'.__('Shift down the page in order not to obscure content behind the notification bar (adds margin-top to the body tag):', 'wp-browser-update').'<br /><select name="wpbu_shift"><option value="true"'.($wpbu_shift=='true' ? ' selected="selected"' : '').'>'.__('Yes', 'wp-browser-update').'</option><option value="false"'.($wpbu_shift=='false' ? ' selected="selected"' : '').'>'.__('No', 'wp-browser-update').'</option></select></p><h3>'.__('Change the CSS Style', 'wp-browser-update').'</h3><p>'.sprintf(__('You can overwrite the default CSS with your own rules (%sread more%s) – leave empty otherwise:', 'wp-browser-update'), '<a  target="_blank">', "</a>").'</p><p><textarea name="wpbu_css_buorg" rows="15" cols="50" class="large-text code">'.$wpbu_css_buorg.'</textarea></p><p class="submit"><input type="submit" name="wpbu_submit" id="submit" class="button button-primary" value="'.__('Update Settings', 'wp-browser-update').'" /></p></form></div>';