Change quest structure to have the reanimated skeleton at first.

Also some reward values have been adjusted.
The reanimated skeleton definitely drops the miners gloves now, but it is
only there if you're actually searching for it (in the quest).

I'll notify @dorkster here as he designed the reanimated skeleton quest and I changed parts of it.

This would fix https://github.com/clintbellanger/flare-game/issues/223 but I am not fully satisfied with the way it is implemented now as it triggers this bug:
* First you get the intro from Martigan
* The dialog interrupts, closes as if there would be no follow up
* Click him again and get to know only about the reanimated skeleton quest.

(Once the first quest is done, both the abandoned tower as well as the goblin lair killing are there via menu)