Graphics change

Hi guys,

I had some longer break, started new job and so on. When I came back to the project I realized that what it really need for starters is a new better looking graphics. So far most of the graphics were created without proper attention, in idea of being temporary placeholder.

I want to make it more consistent and nice to look at. As the first part I took on terrain tiles. Next in the queue are bigger objects and at the end I will work on characters. I hope you would like the change :D