[Regression] Timestamps appear in an unintended position.

[Chiitoo]

Not to be confused with 'Timestamp misalignment #2579'.

Brief Description

OS: Gentoo Linux (~amd64)
qTox version: v1.6.0-62-g9acacbbf
Commit hash: fb96dd6
toxcore: 0_pre20160904
Qt: 5.8 (qtbase commit 50cb268)

Reproducible: Always

Steps to reproduce

1. Run qTox.
2. Open a chat.
3. Send some messages to a contact, or have past messages load in the chat window (the 'not sent' animation still appears at the correct spot).
4. Observe the position of the timestamps.

Observed Behavior

Timestamps are misplaced to the left from their intended position.

Expected Behavior

Timestamps appear at their intended position (closer to the right margin).

Additional Info

Running 'git bisect' leads me to suspect the commit c8512fa as being the culprit.

This is how it makes things look like:

This is how things look with it reverted (one might notice some other changes there as well, but it's the timestamps that we're focusing on here!):