fix 3 things

[luxflow]

1. handle pmSuspended
   when your os go into sleep mode
   system status goes into PMSuspended
   unfortunaely webvirtmgr doesn't handle this status properly
   I added it
2. special character - is not allowed although it is quite used oftenly
   so I added it
3. fix requirement.txt
   so webvirtmgr can be installed in virtualenv like webvirtcloud

apt-get install virtualenv python-dev libxml2-dev libvirt-dev zlib1g-dev
cd /var/www/
git clone https://github.com/luxflow/webvirtmgr
cd webvirtmgr
virtualenv env
source env/bin/activate
pip install --upgrade pip
pip install -r requirements.txt