add a CleanStatusTagTest

Removed tests under parse_compulsoryFieldMissing_failure() method to reflect that Booking and CleanStatusTag are optional

Updated parse_optionalFieldsMissing_success() method to reflect that Booking and CleanStatusTag are optional

…parsertest

Update AddCommandParserTest.java

Update test cases (look at description for specific files)

update test and edit command

Update more test cases, test utils and test json files

Remove trailing whitespace

…limit for single lines.

…whitespace-addcommandparsertest

Update AddCommandParserTest.java

Fix checkstyle

…nce.

Update DeleteCommand.java

Fix Checkstyle for lambdas and some variable names, Fix some tests

Update EditCommand.java to handle duplicate residences

Update examples for add and edit commands in HelpWindow.java

Fix some breaking tests

…for single line.

This reverts commit 7dbc792.

…umentation

Tests for EditBookingCommand

Fixed issues regarding HelpWindow & docs

Update Ui to cater to large quantity of tags per residence.

update DG_status_command,PPP

Fix some documentation bugs, add ppp

update use case