Clean up a bit in guiConstraints.py, add if_exists check in scheduler.py:add_constraint()
Adding mandatory constraints moved to globs.py. Fix repeated calls to gen_start_pop()
Fix indent block for adding mandatory constraints
remove extra call to evolution loop that may have been causing bad results
Fix call to globs.mainScheduler inside Scheduler class
Fixed generate_starting_population being part of the time taken from time_limit
ToolTips only for windows.
Merge branch 'clear_button' of https://github.com/donnell74/CSC-450-Scheduler into clear_button
Merge pull request #29 from donnell74/clear_button

Clear Button fix
Merge branch 'develop' of https://github.com/donnell74/CSC-450-Scheduler into standards