gerrit: linkify references to Analytics Mingle projects.

All of the following (and some other) expressions now link to Mingle
card 42 on our Mingle's analytics project:
    analytics card 42
    analytics card #42
    analytics-card 42
    analytics-card #42
    Card: analytics 42
    Card: analytics-42
    Card:analytics#42

Change-Id: Ic79b7e74ca716670512af4e0496474c6b97f8761