Analytics (global for the project)

[timwhite]

Look into options for collecting analytics for the project (both Admin and Client)
Would be optional (see #189 for opting in).

Needs to track the follow

• Installed version
• Distribution version/type
• Number of hotspot user accounts
• Number of active hotspot user accounts (active last X days)
• Maybe the number of actual logins
• If we had "website" analytics then tracking the admin pages used, how often, etc would be useful
• Enabled/disabled features?
• Usage of features?

Any analytics needs to consider:

• GDPR
• Hosting costs
• Privacy
• Marketing of data (making sure the analytics provider doesn't use it for marketing)

Why??

It's hard to understand what features are used, needed etc. If time is being spent supporting an LTS version from 4 years ago, but no one is using it, then it's wasted time. If the average install size is 300 users, then we don't need to optimise for 10,000 users and can afford to show more rich information on screens. etc