Starting to use extended request. Not working.
Now requesting for one message first, checking if it's new and if it is
- requesting messages.
Extended request
Now using extended request to Vk Api. No separate requests for
user/group data is needed.
Fixed Bug
Looking for users in group parsing. Copypasting code is bad, mkay?
Merge branch 'extended_request'

Conflicts:
	client.cpp
	vk.cpp