Added i18n to Circuit Check Button.
Added rollover image effect to Intervention buttons.
Changed Replace Heater button to i18n version.
Change and fix ImageToggleButton, i18n Emergency Vent button.
Prettify text for Check Circuit button to white.
Added i18n to Lab component buttons: ABG, Chem, Heme, Img.
Cleanup unused images, messages due to restructure of i18n.
Merge branch edits Spanish buttons, remove unused images into i18n.