#6 Does not handle critical errors

[Juan M. Cataldo S.]

Critical errors, like
- PHP function not found (required extension not
installed).
- Database system not responding.

Are not being handled right by Mantra. Instead of
giving the user a description of the problem and stop,
it crashes through the default PHP error messages.

Mantra should:

1. Check for required PHP extensions, notifying the
user if they are not present.

2. Provide a concise and clear message when the
Database system is unavailable.