Multiple bug fixes

【Contents of the fix】
■Fixed a bug where the password protection was not applied to the fixed page for LP.
■Fixed a bug that the title text color setting is not reflected in the TCD theme > Announcements > Detailed page settings > Article title settings > Title text color setting.

The following are the files that have been modified for this update.

【Modified files】
admin/inc/news.php
page-lp.php
style.css