Add setting to cap number of activity days to display
This patch adds a setting, 'web.activityDurationMaximum', that specifies the
maximum number of days of activity that may be requested. The default value is
30. When the number of days requested exceeds this value, the request is
handled as though the maximum value was requested.
Renamed pushlog to reflog to better match it's current and future purpose.
Split PushesPanel into ReflogPanel and DigestsPanel.
Overhauled project pages and gave them a coherent purpose from the dashboard.