corrects the visuals_id

Line 22 has non_visuals_id when it should be visuals_id to match the
level files
Merge pull request #142 from MarkL1961/Pregnant-ID

corrects the visuals_id for pregnant
Correct foruma for earnings from an emergency

If the emergency is a success, earnings is now the per patient
bonus times the number of rescued patients.  This removes the
error that existed when using floating point and math.floor.
Merge pull request #153 from TheCycoONE/emergency_bonus

Correct foruma for earnings from an emergency
Update spanish.lua

Adding missing string and fixing some others on Spanish translation.
Merge pull request #156 from IlDucci/patch-3

Update spanish.lua to fix some spelling mistakes.