New FAQ page and new FAQ entries

[QueueMetrics]

We have put online a new FAQ page - the main advantage is that items are divided into topics, so it's easier to find just what you're looking for.

We also added four new FAQ entries:

- http://queuemetrics.com/faq.jsp#faq-046-protecting-queues
Explains how to use the QM security systems to make some queues private to some users.

- http://queuemetrics.com/faq.jsp#faq-045-n_agents
Explains how the "N Agents" field of the realtime page is computed.

- http://queuemetrics.com/faq.jsp#faq-044-backup
How to backup a QueueMetrics system.

- http://queuemetrics.com/faq.jsp#faq-043-configuring-vicidial
A short guide to configure ViciDial to work with QM.