DG addtoclassCmd and its UML diagrams

…lementation

Add implementation for ClassesUi in DG

# Conflicts:
#	docs/DeveloperGuide.md
#	docs/UserGuide.md

…lassUMLDiagram

update addclass UML diagrams

Branch edit dg

update deleteclass UML diagrams and DG

…ndTag

Limit tags to 50 characters and only 10 tags at maximum and update UG for upcoming features

…Draft

Branch bernard ppp draft

…Feature

Change Tag char limit to 15, tag limit to 5, update in UG, add to proposed feature

Edit DG

…er pattern

Add Observer Pattern into DG and edit Timetable feature

…ponentFixErrors

dg model component fix errors

Update DeveloperGuide to include manual testing

# Conflicts:
#	docs/DeveloperGuide.md

…evin

Update ppp (Kevin)

Edit ppp

…. remove unnecessary deleting a person in manual testing

Branch manual testing

…iagramAddDeleteRemoveFromClass

Edit UML diagram of RemoveFromClass, DeleteClass and AddClass

Add manual testing for list, clear, addclass, findclassname

…actorDG_manual-testing

refactor dg and  add manual testing write up

…into branch-DGRemoveFromClassCommand

# Conflicts:
#	docs/DeveloperGuide.md
#	docs/diagrams/RemoveFromClassCommandSequenceDiagram.puml
#	docs/images/RemoveFromClassCommandSequenceDiagram.png
#	docs/images/RemoveFromClassOverviewDiagram.png

…inal

update ppp

Edit PPP

Shorten PPP

…into branch-DGRemoveFromClassCommand

…omClassCommand

Branch dg remove from class command

…evin

Update Ppp

…assDiagram

split up AddClassRef1.puml into additional AddClassRef1.puml

…omClassCommand

Add spacing

Add some logging and assertions

…pefully

final PPP hopefully