Bumping version number to 0.7.5

The installer at install.amon.cx (serving this file) will need to be updated too.
Merge pull request #84 from Pluies/patch-1

Bumping version number to 0.7.5
0.7.6
mongo indexes for logs and exceptions
ZeroMQ daemon
ZeroMQ daemon updated
ZeroMQ daemon updated, network stats, cpu stats updated
Network stats in the Dashboard page, updated charts, bumped version to 0.9
Rename the daemons
ZeroMQ address in the config file
Working ZeroMQ daemon
ZeroMQ daemon updates
Lock dependecies in the setup file
Unique cookie name
Used memory and disk space in the dashboard and system
Installer updates
Bumped mongo version in the installer, fixed distro detection
Installer updates
Chart updates
Chart updates and new design draft