update GUI

v0.4.0 update GUI

update boss.component
 - cursor pointer
 - fix alt and title image attributes
update marker.component data coordinates
update megaman2.component
 - to use password-screen.component
update password-screen.component
 - image background and its coordinates
 - add bosses, etanks and transport items
add etank.component
add items.component
add new images to assets