Add more info to the status report

Problem/Motivation

We need the status report to provide more info, like de php version, the last time cron was runned, etc

Steps to reproduce

Update the code on the SDController to include more info on the JSON response
Update the Status Dashboard module so it recives and reproduces the info

Proposed resolution

Add more info to the JSON response

Remaining tasks

User interface changes

API changes

Data model changes