feature requests: hope to handle relative time

[n-arakawa]

Currently only "UNIX Timestamp (Number)" is allowed in "Time From/To Field"'

Hope to allow relative time such as '-1d' for last day or so.

[psheehymn]

I second allowing relative times as an option for the from_time and to_time. We are constructing a suite of dashboards displaying portal health, with a target audience of upper executive and C-level users.

Because various portions of the portals use different monitoring tools (New Relic, Data Dog, Dynatrace, etc.), we often have to create Mixed data source panels. In order to get Time Series returns from the various sources to properly align, we have to append "/h+1s" to the to_time. There's no way we're going to levy that kind of manual step on C-level execs, so we need to be able to create an alternate time picker which does that under the covers. This plugin would be perfect for that, except that we need to replicate the relative time functions of the main time picker.