Bug fix in allocate_ip function. Allocate IP question was asking user y/n however function was expecting yes/no.

Do you want to email this .ovpn file now (y/n)n
/usr/lib/openvpn-server/ovs-commands/build-generic-client: line 93: syntax error near unexpected token `echo'

Improve make-static-ip while were at it

 * Refactor make-static-ip
 * Refactor functions, help and revoke cert to work with new code
 * New script to generate ip's in a subnet or cidr

minor spelling mistakes
adjust wording when making a certificate so silly characters aren't used in common-name