Level menu background added
Merge remote-tracking branch 'origin/Jacob'
Troll Sprite
Reworked tower selection bar to show name and price
Merge branch 'master' of https://github.com/siketh/COP4331_Project
Tower bar upgraded to show the image, name, and cost

The cost will change from green to red when it is no longer affordable
Changed master tower generator array into normal Java array
New Level Menu buttons
Merge branch 'master' of https://github.com/siketh/COP4331_Project
Added comment clarification on Tower.towerGenerators

To define a new tower, define a new anonymous Tower.Generator class
Merge branch 'master' of https://github.com/siketh/COP4331_Project
Thicker Arrows
Selecting the same tower on the tower bar deselects it now
Finished