bug fix: space removed from node when parse html

refer: https://github.com/WizTeam/WizQTClient/issues/177
bug fix: search thread not quit issue
draw message count and show unread messages
fix unread message drawing issue on linux
set dock badge of messages under osx
update badge of messages
bug fix: null pointer broken issue
show latest notes of biz group root
issue fix: wrong cursor issue of fcitx
move about dialog to core plugin
bug fix: auto save note cursor reset issue
bug fix: update list of biz group root when syncing
bug fix: fix DND issue
add group notes drag/drop support
only try load thumb cache for the first time
bug fix: only show unread messages when unread > 0
clean up
disable cipher form animation
move AvatarHost from WizService::Internal to WizService
fix build issue on osx, need revert