ability to 'sleep' a build for a defined period

[rogerthemoose]

It would be nice to be able to quickly remove a build from the watch list for a configurable period, a few days or hours.

e.g. we currently have builds that depend on external integration points and we don't expect them to go green for a number of days. we want to supress the red status temporarily, but don't want to forget to re-enable the watch at some point in the future