Mouseover should always work, even if only the final word is truncated

[jidanni]

We are looking at the subjects in our inbox.

If we place the mouse upon this truncated title,

indeed, a mouseover appears telling us the full title.

Except,

• if the "..." occurs on the final word

In such case, to learn what the rest of that word was, we can only

• guess, or
• open the message to see.

What's worse, if the "..." represent some CJK characters, then the "rest of the word" might represent a pretty significant amount of information!

Solution: the mouseover should show the whole Subject in all cases.

[alecpl]

Indeed the method we use is not precise enough. Some adjustments might be needed around rcube_webmail.long_subject_title().