[FIX] mail: only update timestamps periodically

the messages in a thread were previously rerendered every minutes to
update their timestamps.  This commit only update the timestamps, not
all the message.  This will allow us to keep expanded/folded state in
messages without collapsing them every minutes.

[IMP] mail: add read more/read less support client side

Messages are cleaned up and tagged server sides, with a attribute
data-o-mail-quote.  This commit replace their content with a clickable
read more link, which toggle its display.

0 files changed, 0 insertions, 0 deletions