Level Editor Button Edits

Created Button Class
Colorful Bricks

Some minor revisions to brick class to accomodate multiple colored
bricks - ImgSrc data member added holds location of image
Select Bricks

You can click on a brick to select it.
Bricks now have int types. Added sprites for each type. No file i/o yet
Read bricks from map2.bb. changed brick images
Brick class no longer draws blank bricks
New LevelHandler class
Add LevelHandler files I forgot
Level editor add or delete bricks

Can now play with level editor!
User clicks into space to place brick, which is actually stored in
vector which can be turned into a file.
Slight changes to brick class and how images are displayed.  Links
Bricktype to imgSrc in case brickType changes in middle of execution.