change the option menu based on the current selected page (only UI, the
option's functionality will be implemented later)
Change the page select logic from Tab to PageViewer, which fixes a small
non-smooth scroll when saving a palette in edit view and back to palette
list view
change the menu options in palette card view
Introduce the about view
tweak the color baseline
hook up the edit option in palette card to palette edit view
add the android parameter "android:windowSoftInputMode="adjustNothing"
to stop the main activity and edit view activity resize its window when
the soft keyboard appears
implement the change title name function in palette edit view