[Fellowships] Include voting summary statistics in /colleges/fellowships_monitor

Feature Request

Description

Include number of votes cast / voting invitations in the fellowships monitor.

Proposal

The duties of senior editors include monitoring college activity. While the information about fellow activity as the editor in charge is available both in /submissions/pool and the fellowship monitor, accessing voting history is impossible to the best of my knowledge.

The information regarding voting activities is relevant to identify inactive fellows, as well as to identify fellows that are useful to invite to vote.