Merge pull request #232 from COMP231-S63G1/addFriend

Complete task #190
unneeded commit
chat request button task #167
Merge pull request #234 from COMP231-S63G1/chatRequestOption

Chat request option
NotificationPHP
Merge pull request #235 from COMP231-S63G1/notificationPHP

NotificationPHP #184
Notification of declining friend request
Merge pull request #236 from COMP231-S63G1/notificationDeclineFriend

Notification of declining friend request #174
Notification of accepting friend request
Merge pull request #237 from COMP231-S63G1/notificationAcceptFriend

Notification of accepting friend request #173
Notification of accepting group
Merge pull request #238 from COMP231-S63G1/NotificationAcceptGroup

Notification of accepting group #171
Notification of declining group request
Merge pull request #239 from COMP231-S63G1/NotificationDelineGroup

Notification of declining group request #172
Notification Changed
Merge pull request #240 from COMP231-S63G1/NotificationChanged

Notification Changed
Complete task #190