Spell tooltip fixes 0.3.6

• Added tooltips for Fame, random offers, concept of heroes and how to acquire them.
• Made basically all spell tooltips print what they do in some fashion. Before many just didn't properly print their effects from the mod files.
• Made unit enchantments print out their effects again as well.
• Added the cursive targeting text to all spells, so you see if they are enchant unit, enchant global, target tile etc. Clears up a lot as well.

Making tooltips integrate properly with the powerful mod file system is a bit hard. It is easy to print all information but then some spells would take up the entire screen, you need to make decent defaults there.