add test to gui constraint
add duplicate constraints check and error popup
Fix viewing invalid schedules.
add bool value is_mandatory to create constraint function
View schedules in a graphical way.
added tests to get priority value in gui constraint
add mandatory code to course constraint functions
add mandatory option to instructor constraints
fix mandatory priority display in added constraints window
Merge branch 'constraintCRUD' of https://github.com/donnell74/CSC-450-Scheduler into constraintCRUD
add before/after same time conflict check
add check for different sections of same courses not at same time
remove unnecessary comments
Remove room number, building, and day from view schedule output. And increase view schedule window size.
Merge branch 'constraintCRUD' of https://github.com/donnell74/CSC-450-Scheduler into constraintCRUD
added selectable constraints view
Init room capacity logic
Merge branch 'capacity_logic' of https://github.com/donnell74/CSC-450-Scheduler into computers

# By Daniel Hebrink
# Via Daniel Hebrink
* 'capacity_logic' of https://github.com/donnell74/CSC-450-Scheduler:
  Adding capacity constraint to Scheduler obj.
  Add capacity constraint function. Need to add to Scheduler obj

Conflicts:
	genetic/seeds/Input.xml
Update test xml with computer information; use semantic Python 'True' rather than 'true'
added delete all constraints in the gui