Plenty of people voiced their opinion that everything after '>' should be a
quote. Trying to conform to anything other brings only chaos and makes
situation worse, since it is impossible to catch every exception.
There are already plenty of cases where regexp simply can't work with unicode.
In the future, qTox should have easy to use r-click options for 'Paste text as
a quote' and 'Copy as a quote', which makes it a must to have quote detection
as simple as possible, to avoid situation where user wants to paste something
as a quote, and suddenly it doesn't seem to work.
Fixes#1059#1099#1173
Continuation of #1332
* Allow quoting in action messages if line number is >1.
* Fix regression introduced by 1244d689f6 where
'\n' was being trimmed in action messages.
* Add comment about typing notifications placeholder that needs to be fixed.
Quoting with action messages produces badly looking messages,
where nick is blue coloured, while rest of text that is preceded
by '> ' is green. To avoid that, quoting should not be triggered
in action messages.
Since consistency in code is most important, 'ToxId' is used
for code, whereas 'Tox ID' anywhere outside of code.
Also fixed wrong comments in core.h:
* qTox gets only public key of a grouchat peer, not their
Tox ID
* qTox tries to return full address (Tox ID) or public key