* Update blueprints with number of mentions (emails, commits, reviews)
* Improved understandability of record processor tests (significantly refactored)
* Extracted LP specific functions into launchpad_utils
* Refactored activity template in UI
Implements bp metric-by-bugs-blueprints
Change-Id: I9008a84ef1960e54be6e61f0ef3d69cd2cc1d9e4