add. 'pages created' metric.

Change-Id: I501309ff2dcd0366004aa17ea9389b745426400a
Email serious errors to dev's

Change-Id: Ib439d014131e9efee37f20df0b8db290a51f66ef
Merge "Email serious errors to dev's"
Merge "add. 'pages created' metric."
Merge branch 'gerrit'