Made changes to Backup, Message, TooltipManager
first phrase refractoring completed for UI
get task from display id, #189
minor refactor and add comments
unstage AddressApp.ico
Priority now saved as boolean
removed build folder
fixed missing date format for deadline tasks
renamed TaskListCell
removed build.fxbuild
Merge remote-tracking branch 'origin/hyungjon-datastorage'

Conflicts:
	src/application/Message.java
Merge remote-tracking branch 'origin/xjy-parser'
Merge branch 'sun-v0.5'

Conflicts:
	src/application/Task.java
remove collate.exe
implementing edit autocomplete
Merge remote-tracking branch 'origin/master' into tys-ui-v0.4
implemented: edit autocomplete (UNTESTED)
Merge branch 'tys-ui-v0.4' into xjy-parser