addresses issue #4156

when there are large number of members of in a team, for me 260+

Before:
[2013-06-01 00:55:01]   Rendered team_members/_team_member.html.haml (206.9ms)
[2013-06-01 00:55:01]   Rendered team_members/_team.html.haml (54479.2ms)

After:
[2013-06-02 02:40:36]   Rendered team_members/_team_member.html.haml (2.1ms)
[2013-06-02 02:40:36]   Rendered team_members/_team.html.haml (1412.6ms)

There are no doubt more elegant solutions, but this addressed my immediate problem.