VM: make tightvnc the default VNC viewer in Windows
GUI: cancel sudo dialog in one session
GUI: don't use sudo for "ip" command
PCMK: don't use corosync status commands in hb clusters and vice versa

so they don't need to be allowed for sudo
GUI: use the same sudo pwd in the sequence of commands
add commands to README needed for sudo
GUI: ask for sudo password if it failed

in some configurations the root password is needed for sudo
add pcmk 1.1.9 installation method
PCMK: fix cibmon invocation and parsing for pcmk 1.1.9
GUI: change "upgrade available" link to the main site
add another installation method for centos 6
add debian java 7 dependency