Intercepts *most* instances of FLAG_DEFAULT getting set, including
when XML files are loaded and when Open-Shell starts, adding
if-statements to those spots to check if a new value is actually
different from the setting's default value. Ensures more consistency
behind the scenes and gets rid of inaccurate bold highlights.
Opens pinned items on both sides of the start menu in just one click,
while preserving hover functionality. Ignores the All Programs button
for now as the All Programs folder is rarely accessed and this option
can obstruct its use, especially for the inline menu style. Fixes#692.
