DM VPN manual is available and other documentation updates

After 5.0 release, we started to update user manuals to keep it in actual form.
New document is 'DM VPN user manual' which describes DM VPN in NETSHe implementation and configuration and it is available at http://www.netshe.ru/files/doc/en/DMVPN.pdf
Another one is brief about network management and monitoring system update which is available at http://www.netshe.ru/files/doc/en/NMS.pdf

More documentation updates will be ready soon!