Reorganized and improved sprites

*Gimp file into female and male.
*Created sprites for both of them
*Created a shop.xcf Here shop versions for all items will be kept.
*Created a shop sprite. Includes potion, reroll icon and gold, silver, copper coins

*Created a development xcf. This will contain items which are in development and a base pixel art for male and female which can be used to cross check your new items against. E.g. does my helmet fit the system yes or no?
Merge pull request #343 from Pandoro/new_pixel_art

Reorganized and improved sprites