issue #108: add realtime processing per rule

[dmitriim]

This MR adds realtime processing per rule.
If realtime processing disabled globally, then rules won't be processed realtime regardless of per rule settings and an admin will see notifications about that.

A new realtime field is set to 1 (enabled) by default to make sure that a new feature doesn't break current logic of the plugin.

[Fragonite]

Hi @dmitriim,

The changes look good but there is a potential issue.

I setup a real time rule with the requirement Users with Last name contains User which correctly matches my local admin user, but when I enabled the rule, the user was not added to the cohort until after I updated a random field on the profile page.

I would have expected the user to be added right after enabling the rule. Is this a bug or the intended behaviour?

Thanks.

[dmitriim]

@Fragonite assuming it was with real time enabled.
Rules are triggered either by event or by cron. In your case running cron after you enabled the rule would do the thing. Then you triggered user_updated event by updating user profile which triggered the rule. All works as expected.