[server] Improve a few processors.
update build script

don't copy seafile Chinese tutorial by default
[server] added 2.2.0 upgrade script
[client] updated msi/deb version to 2.2.0
[scripts] do not create admin in setup scripts

We should delegate all admin-related work to ccnet-server.
Merge branch '2.2'

Conflicts:
	debian/changelog
	msi/Includes.wxi
[scripts] add 2.2 to 3.0 upgrade script

Also upgrade source version to 3.0.2