[Evolution] "Mark messages as read" option will return in 3.6

[Matthew Barnes <mbarnes redhat com>]

Wanted to mention that I've restored the "Mark messages as read after X
seconds" option to the Preferences window for Evolution 3.6, and issue a
"mea culpa" to the community for removing it.

That option was removed along with four others in 2010 by me as part of
an effort to try and get the size of the Preferences window scaled down
enough to fit on a netbook screen.

I had also seen recommendations to remove the option from various
"usability experts" and by that point it had already been removed for
MeeGo's Evolution Express.  I also personally didn't think it was very
useful.

Haven't heard a peep about the other removed options, but I was taken
aback at the backlash and confusion over the "Mark messages as read"
removal on this list, our IRC channel, and various support forums.

Clearly I underestimated its popularity/usefulness, so it will return in
Evolution 3.6.  No more having to memorize dconf keys.

Matthew Barnes