temporary initialization of arraylist

Fixes #62.
removed  variable and methods for taskType
Merge branch 'sun-taskclass'
Merge remote-tracking branch 'origin/tys-ui'

Conflicts:
	src/application/Controller.java
	src/application/TaskManager.java
Merge branch 'master' into tys-ui
make some changes to the ListView so that it will retrive the task description from the TASK Class