Bugfixes and Weather Fix

So I did a few bugfixes and added some perks.
-Interest system improved. The more monsters you kill off, the more the bank values your service. Interest starts at 0%, and can increase up to 10% if you have fought in over 1500 battles (without running or dying)
-There turned out to be an April Fools bug that I found somehow or other while looking at code (the problem with ambitious updates is that sometimes you get annoying bugs) where all characters are turned to the same class. I fixed that.
-I also fixed a bug with weather. Apparently, I had a variable that nothing called, so the the numbers for seasons in weather were all there, but there was nothing setting the seasons. This seems like a simple oversight, but I have too many common events.  I decided to instead switch it to season names, as I already had code that named seasons.
-I made a common event that does all the startup codes, so I can simply plop my main character on the map and have all the weather and time stuff work.

So, long story short, the game now has an interesting bank interest system, and a working sun motion (I checked) system, and correctly knows that it should be snowing today because it's winter. Which is more than the weather service knows.  Stupid forecast of 64 degrees.