Improved view command

[Andrew22Teoh]

Hey folks, I'm quite happy with this new version of the view command.

Instead of opening a new window, this now modifies the PersonCard that displays information for each contact within the list of persons. This way, the ViewCommand no longer has to do a find operation, and the persons being displayed will not change upon execution of a view command. Furthermore, more than 1 contact may be viewed at a time now, and you can collapse the view of a person back down to its concise form by simply using view on an expanded index.

• This solves the problem of interrupting typing of users who are purely using keyboard, since a new window is no longer opened, closing #159.
• The expanded views are also immediately updated upon use of the edit command, closing #158.
• Labels are now present for all fields in the expanded view card except for name, since that text is already larger, closing #152.

Closes #142.

UG and DG including UI Class Diagram have been updated. Tests have been updated accordingly to match, but I can't really think of any additional tests to implement, so I'd love any feedback or suggestions from reviewers!

Tests to add:

• [ ] isViewCommand() method in CommandResult

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 30.00000% with 35 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/main/java/seedu/address/ui/PersonCardFull.java	0.00%	15 Missing :warning:
...rc/main/java/seedu/address/ui/PersonListPanel.java	0.00%	12 Missing :warning:
src/main/java/seedu/address/ui/MainWindow.java	0.00%	6 Missing :warning:
...va/seedu/address/logic/commands/CommandResult.java	92.30%	1 Missing :warning:
src/main/java/seedu/address/ui/PersonCard.java	0.00%	1 Missing :warning:

Files with missing lines	Coverage Δ	Complexity Δ
...java/seedu/address/logic/commands/ExitCommand.java	100.00% <100.00%> (ø)	2.00 <1.00> (ø)
...java/seedu/address/logic/commands/HelpCommand.java	100.00% <100.00%> (ø)	2.00 <1.00> (ø)
...java/seedu/address/logic/commands/ViewCommand.java	100.00% <100.00%> (ø)	7.00 <0.00> (-1.00)
.../seedu/address/logic/parser/ViewCommandParser.java	100.00% <ø> (ø)	4.00 <0.00> (ø)
...va/seedu/address/logic/commands/CommandResult.java	96.55% <92.30%> (-3.45%)	16.00 <6.00> (+1.00)	:arrow_down:
src/main/java/seedu/address/ui/PersonCard.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
src/main/java/seedu/address/ui/MainWindow.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...rc/main/java/seedu/address/ui/PersonListPanel.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
src/main/java/seedu/address/ui/PersonCardFull.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)

... and 1 file with indirect coverage changes