commented levelmanger_base and levelmanager_dev
Deleted most unused files, and finished commenting level_manager section
Added initial version of demo levelmanager
also mostly commented base character movement class
new files
Added demo level with timing working
Added Rowfalling over time, initial implementation.
Also fixed up objectives for start and end time to work better.
Also added difficulty settings.

note that a lot of the code to get the final features in is not very elegant, or tie in very well with the other code. Think of it more as proof of concept right now.