Linux client shows the wrong timestamp for messages

Summary

When sending/receiving messages on the Linux client, the timestamp is always from the UTC timezone

Environment

• HipChat Linux version 4.26.0.1655

Steps to Reproduce

1. Upgrade to the latest version of 4.26.0.1655
2. Send a message
3. Check the timestamp

Actual Results

The timestamp of the message will be in UTC, regardless of the timezone that the user's profile is in

Notes

• During this test, the profile was set to GMT+8 (which shows 6pm), yet the message is shown as being sent at 10am (which is the equivalent time in the UTC timezone)