Preparing alpha version

Added : alert div in web page
Updated : version name (Indev to Alpha)
Removed link to "dashboard" old page

This page is not ready yet. In the future, it will be a "snapshot" with many informations (top processes by cpu/memory, many informations on the host, etc…).
Maybe in a 0.2.0 alpha :)
First wave of fixes (alpha release)
Python syntax fixes
Merge pull request #21 from miniche/develop-alpha-preparation

Preparing alpha version