Added new checkpoints to Easy/Normal difficulty:
Every mission in the first Campaign (other than the boss)
will now have a checkpoint after the first 'Encounter'.
Added a backing bar to the 'Required Hero(es)' message in mission select.
Fixed Archer body to not have an expire message C1M3.
Fixed a few minor bugs with dead Dwarf BSmith showing Chained on the UI C1M4.