doc/web: Updated and extended documentation.
Updated description of subcommands aliasdelete and catchalldelete.
Added description of subcommands listaddresses, listaliases,
listrelocated and listusers.
=============
Upgrading vmm
=============
Upgrade instructions for different versions of vmm.
.. toctree::
:maxdepth: 1
upgrade/0.5-0.6
upgrade/0.4.x-0.5