prevented user from submitting multiple stages with the same name and also trimmed the input on text fields in stage and task tabs
tests added to TaskModelTest
Merge branch 'dev-gradle' of github.com:dcpounds/wpi-suite into dev-gradle
recentering the stage title
Merge branch 'dev-gradle' of https://github.com/dcpounds/wpi-suite into dev-gradle
added clear filter button
toolbar changes
Merge branch 'dev-gradle' of https://github.com/dcpounds/wpi-suite into dev-gradle
toolbar view changes
fixed snapshot bug in git import
can't delete stages with tasks
added editing check to requirements field
Merge branch 'dev-gradle' of https://github.com/dcpounds/wpi-suite into dev-gradle
Merge remote-tracking branch 'origin/dev-gradle' into merged-reports

Conflicts:
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/model/StageModel.java
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/reports/TaskSnapshot.java
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/view/StageView.java