incorporated new LevelPortal into LevelEditor
finished incorporating LevelPortal into LevelEditor so there can be multiple Sprites extending LevelPortal
door is added to level simulate. but disapears when you get too close...
moved and delted LevelPortal files
add door to sample test
conflict merge
created a recursive strategy for collision manager
fixed levelportal bugs. works well now
replaces LevelPortal with more general IDoor in some cases
merge conflicts
got rid of unused code in LevelFactory