Added logoff code

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@39 8ca6c67d-4297-256d-f884-781da6d5760b
Fix bad request url for message poll

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@40 8ca6c67d-4297-256d-f884-781da6d5760b
Fix compiler errors (Thanks to lasserre.d for pointing them out :) )

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@41 8ca6c67d-4297-256d-f884-781da6d5760b
* Fix timestamps for historical messages ~> actual_time = current_time - (server_time - message_time)
* Display sent messages from other clients as if they had been sent from Pidgin (i.e blue text instead of red)

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@42 8ca6c67d-4297-256d-f884-781da6d5760b
Add an advanced account option to 'always use https' for message polling, which reduces message lag at the expense of some CPU cycles

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@43 8ca6c67d-4297-256d-f884-781da6d5760b
Merge remote-tracking branch 'git-svn'