[UI] Optimize display format of task logs

[hankquan]

Pull Request type

• Bugfix
• Feature
• Refactoring (no functional changes, no api changes)
• Build related changes (Please run ./gradlew generateLock saveLock to refresh dependencies)
• WHOSUSING.md
• Other (please describe):

Changes in this PR

Changes:

1. Now, timestamp column uses 50% width in task log which wastes lots of area. In this chage, log time column is fixed to 180px which is enough to show timestamp.
2. Time entry doesn't support word wrap, for a log message contains \n, the UI table can't display it in a new line. This change also add css styles to support it.

Alternatives considered

Maybe there are other ways to approach the same target, this change can also be abandoned if there are better ways. But please consider the idea of this display improvement.

[hankquan]

Current task logs:

After this change: