Some small accumulated tweaks — Northern Journey Steam update #824368

In Ravefen, the message near the exit has been reworded to 'Have I found a Bow and a Shield here in Ravenfen?' The previous message could be a bit confusing. The spider-spawners in Granite Gash has reduced health and a bit slower moving speed. The jumping spiders in Forest path had an issue, which could make them spin or jerk. It was caused by some of them having a rotation in the x and y axis, while movement was restricted for the same axis during movement. The big trapdoor spider in Granite Gash has been health-nerfed by a little value.